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2019年06月21日 06:11:36|来源:国际在线|编辑:京东报
Who could have imagined that a tmill on wheels would one day become a thing?!? Lopifit is an unusual means of transportation that allows you to power an electric bicycle by walking on a tmill.谁能想到有一天在跑步机上装轮子会成为流行?!?电动自行车Lopifit是一款与众不同的交通工具,你可以通过在跑步机行走来为它充电。Lopifit founder Bruin Bergmeester says it all started when he asked himself the question ;How can I use a tmill outdoor?;Lopifit的创始人布伦.伯格米斯特表示,这一切都始于他心中的一个疑问:“我怎么才能在室外使用跑步机呢?”He eventually came up with an functional design, added an electric engine, and the Lopifit was born. It#39;s similar to an electric bicycle in that the motor only engages when the rider puts power in as well.他最终想到了一个可行的设计,那就是在自行车上添加一台电动发动机,Lopifit就此诞生了。它和电动自行车的相似之处是,只有在骑车人注入动力时发动机才能接合。Only while typical e-bikes give pedal assist, the Lopifit senses when you walk on the tmill and uses the motor to turn a drive chain at the rear of the tmill, helping you reach a top speed of 17 miles per hour.只不过,一般的电动自行车是辅助脚踏板的,但当你走上Lopifit的跑步机时它能够有所感应,并通过发动机带动跑步机后部的传动链,其最高时速可达约27千米。To use the Lopifit, simply turn on the battery and use your foot to slide the tmill backwards and activate the motor.驾驶Lopifit时,你只需打开电源,用脚让跑步机向后滑动来启动发动机。Then get on and enjoy the ride! If you need speed, just walk on the tmill, and if you want to coast, all you have to do is stay still and admire the view.然后,你就可以上车飞驰了!如果你想加速,只需在跑步机上走起来,而如果你想慢慢滑行,只要呆着别动欣赏风景就可以了。To stop, you have two hand breaks at your disposal.你可以随意使用两个手刹停下来。The right lever disengages the motor assist and activates a rear disc brake, while the left one stops the tmill itself, so you can go from motor assist to coasting.右边的操纵杆可分离发动机助动装置,同时启动底部盘式制动器,而左边的操纵杆可以让跑步机自己停下,这样你就不会滑行了。The Lopifit first hit the streets in 2014 and, unsurprisingly, became an instant hit.不出所料,2014年Lopifit首次出街便火速蹿红。That was actually quite challenging for the company, because it started getting inquiries and calls for orders, but it was nowhere near y for mass production.这对Lopifit公司来说是一个很大的考验,因为他们还远没有做好大规模生产的准备,就开始收到咨询和订购需求。The unique tmill bicycle became available this year, and Lopifit is struggling to keep up with demand, despite the hefty price tag of ,115.Lopifit今年已经开售,虽然这款独特的跑步机式自行车售价高达2115美元,但是仍然供不应求。But despite having a very loyal fan-base of so-called Lopifitters, the ingenious means of transportation also has naysayers who simply consider the concept stupid and unnecessary.不过,除了一批被称为Lopifitter的死忠粉外,也有人不看好这款颇具创意的交通工具,他们觉得这样的创意愚蠢而多此一举。They basically believe that if you#39;re going to walk, you might as well do it the old fashioned way.他们主要认为如果你想要步行,还不如就用传统的方式。But the Lopifit does have the unique advantage of helping you “walk” really fast without breaking a sweat, or walking at cycling speed, if you will.可是,Lopifit独特的优点是,如果你愿意的话,它可以让你不流一滴汗就“走”得和自行车一样快。 /201612/483369China’s space ambitions have taken a further step down a path blazed by the US decades ago, after revelations that its first space laboratory is likely to fall to earth next year.中国的航天雄心沿着美国几十年前就趟出的道路又向前迈进了一步。有消息称,中国首个太空实验室很可能将于明年坠回地球。In a press conference at Jiuquan, the desert launch site for China’s space rockets, Wu Ping, a director at China’s space engineering office, said the Tiangong-1 would most likely burn up on descent, confirming suspicions that the lab was no longer in a controlled orbit. 在位于沙漠地带的酒泉卫星发射中心举行的新闻发布会上,中国载人航天工程办公室副主任武平表示,天宫一号(Tiangong-1)最有可能的结果是在陨落过程中烧蚀销毁。这一表态实了关于该实验室不再处于受控轨道的猜测。The eight-tonne lab was launched in 2011 and decommissioned earlier this year.这座重达8吨的实验室是于2011年发射的,并在今年早些时候退役。The possibility of an uncontrolled descent is reminiscent of the 1979 re-entry of Skylab, Nasa’s first space laboratory, that generated a storm of media attention in the weeks before it crashed to earth.可能发生的失控坠落,让人回想起了1979年美国国家航空航天局(NASA)首座太空实验室天空实验室(Skylab)重入大气层那件事。在坠回地球之前的几周里,那次重入引发了媒体的疯狂关注。Mr Wu did not say when the Tiangong-1 was likely to re-enter the atmosphere.武平并未言明天宫一号可能于何时重入大气层。China is rapidly catching up with the US, EU and Russia in space, building its own networks of telecommunications satellites and mimicking earlier ambitions for a mission to the moon. 中国正在太空领域飞速地追赶美国、欧盟(EU)和俄罗斯,它建立了自己的通信卫星网络,并照猫画虎地制定了自己的登月抱负。It landed a moon rover, the Jade Rabbit, on the moon in 2013 but a defect in the rover’s solar panels means it is effectively defunct.2013年,中国将玉兔号(Jade Rabbit)月球车送上月球。然而,玉兔号的太阳能电池板出了故障,导致它事实上无法继续工作。A satellite launched earlier this summer has the distinction of being the first where China is scientifically in the lead, as it will test the principle of quantum entanglement over long distances. 中国今年夏天早些时候发射的一颗卫星有一个独特之处,它是首颗涉及中国在科学上拥有领先地位的领域的卫星。这颗卫星将检验长距离的量子纠缠原理。If successful, the technology will, in theory, allow any snooping on communications to be detected, but a Chinese cryptographer has argued that the messages are still vulnerable to being destroyed, limiting its military value.这种技术一旦成功,理论上将能够察觉任何对通信的监听。不过,中国一位密码学家认为,用这种技术传递的信息依然很容易遭到破坏,从而限制了它的军事价值。The Tiangong-1 served as a base for experiments for more than four years, roughly twice as long as originally anticipated. 天宫一号作为实验基地已役了四年多,差不多是最初预期寿命的两倍。It will be replaced with the Tiangong-2, which launched last week.它将由日前发射的天宫二号(Tiangong-2)代替。The large expanses of ocean and desert on earth means that the portions of the lab that do not burn up on entering the atmosphere are unlikely to hit populated areas.地球上海洋和荒漠面积广大,意味着天宫一号重入大气层后未烧蚀销毁的部分不太可能击中有人居住的地区。In 1979, large segments of Skylab crashed to earth in a remote part of Australia, prompting the shire of Esperance to fine Nasa A0 for littering. 1979年,天空实验室的多块大型残骸坠落在澳大利亚一个偏远的地区,结果NASA被埃斯佩兰斯郡(Esperance)罚了400澳元,罪名是乱丢杂物。The fine was only paid in 2009 when an California radio host raised the money from listeners.这笔罚款到了2009年才被付,当时加利福尼亚州一电台主持人从听众中那里筹来了这笔钱。 /201609/468730Why did humans evolve to walk upright?Why did humans evolve to walk upright? Perhaps because it's just plain easier. Make that "energetically less costly," in science-speak.Bipedalism - walking on two feet - is one of the defining characteristics of being human, and scientists have debated for years how it came about. In the latest attempt to find an explanation, researchers trained five chimpanzees to walk on a tmill while wearing masks that allowed measurement of their oxygen consumption.The chimps were measured both while walking upright and while moving on their legs and knuckles. That measurement of the energy needed to move around was compared with similar tests on humans and the results are published in this week's online edition of Proceedings of the National Academy of Sciences.It turns out that humans walking on two legs use only one-quarter of the energy that chimpanzees use while knuckle-walking on four limbs. And the chimps, on average, use as much energy using two legs as they did when they used all four limbs.However, there was variability among chimpanzees in how much energy they used, and this difference corresponded to their different gaits and anatomy.One of the chimps used less energy on two legs, one used about the same and the others used more, said David Raichlen, assistant professor of anthropology at the University of Arizona."What we were surprised at was the variation," he said in a telephone interview. "That was pretty exciting, because when you talk about how evolution works, variation is the bottom line, without variation there is no evolution."Walking on two legs freed our arms, opening the door to manipulating the world, Raichlen said. "We think about the evolution of bipedalism as one of first events that led hominids down the path to being human."The research was supported by the National Science Foundation and the L. S. B. Leakey Foundation. 人类为何进化到了直立行走的姿态?可能这是因为直立行走要容易得多。用科学术语来说,直立行走能“节省能量”。用两条腿走路是人类的基本特征之一,多年来,科学家们在这一特征的形成问题上一直争论不休。在这项最新研究中,研究人员让五只大猩猩戴着可测算氧气消耗量的面罩在跑步机上行走。研究人员对大猩猩在直立行走和四肢着地行走时消耗的氧气量分别进行了测量,并将结果与人类的进行了对比。这些结果在本周《国家科学院院刊》的网络版上公布。测算结果表明,人类用两条腿行走时消耗的能量仅为大猩猩四肢着地行走时所消耗能量的四分之一。平均来看,大猩猩两条腿行走时消耗的能量与四肢着地行走时的差不多。但行走时消耗能量的多寡在这些大猩猩中也存在差异。这与它们不同的步法和解剖学特征有关。亚利桑那大学的人类学副教授大卫·里奇伦说:“其中一只大猩猩用两条腿行走时消耗的能量较少,还有一只两种行走方式消耗的能量相同。其余的两条腿行走时消耗的能量较多。”他在接受一个电话采访时说:“让我们感到惊讶的是变异。这十分令人兴奋,因为变异在进化过程中起着关键性作用。没有变异,就不会有进化。”里奇伦说,双腿走路解放了我们的双臂,为我们主宰世界打开了大门。“双腿直立行走的进化是原始人向人类进化的最初阶段中的一步。”该研究是由美国国家科学基金会和L. S. B. 李基基金会提供持的。 /200808/46206

Chinese ecommerce group Alibaba has announced a bn deal to take a controlling stake in its Southeast Asian counterpart Lazada, as it looks to expand beyond China’s increasingly saturated market. 中国电商集团阿里巴巴(Alibaba)宣布斥资10亿美元获得东南亚电商Lazada的控股权。阿里巴巴正寻求在日益饱和的中国市场以外扩张。 As well as taking roughly 0m in new shares, the Chinese group is replacing big-name European investors such as Rocket Internet, the Berlin-based start-up incubator, and Tesco, the UK supermarket chain, which are selling down significant stakes in Lazada. 在出资约5亿美元购买Lazada新股的同时,阿里巴巴将取代Lazada的欧洲大牌投资者,例如总部位于柏林的初创企业孵化器Rocket Internet和英国超市连锁乐购(Tesco),这些投资者将减持在Lazada的大量股权。 The deal, announced yesterday, sees Alibaba join a number of large Chinese companies, including Anbang Insurance and Dalian Wanda, which are hunting for foreign acquisitions. 昨日宣布的这项交易令阿里巴巴加入寻找境外收购目标的很多中国大企业的行列,包括安邦保险(Anbang Insurance)和大连万达(Dalian Wanda)。 “Globalisation is a critical strategy for the growth of Alibaba Group today and well into the future,” Michael Evans, Alibaba president, said. “With the investment in Lazada, Alibaba gains access to a platform with a large and growing consumer base outside China.” “全球化是阿里巴巴现在以及未来很长时间的一项重要增长战略,”阿里巴巴总裁迈克尔#8226;埃文斯(Michael Evans)表示,“通过投资Lazada,阿里巴巴在中国以外获得了一个拥有大规模且不断增加的消费者群体的平台。” The relatively untapped Southeast Asia market is attractive to Alibaba as the Chinese ecommerce sector appears saturated with a slowdown in quarterly revenue growth. Ecommerce accounts for about 3 per cent of retail sales in Southeast Asia compared with 8-10 per cent in China. 相对开发不足的东南亚市场对阿里巴巴颇具吸引力,因为中国电商行业似乎已饱和,导致季度收入增速放缓。在东南亚,电商占零售销售的3%左右,而中国为8%至10%。 /201604/437350

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