机器人租赁的商业逻辑：看上去成立，但并不简单从表面上看，机器人租赁是一门非常直观的生意。购买设备，通过平台接单，将机器人租给商场活动、企业年会、节庆表演等场景，赚取租金差价。
Perhaps it’s the biggest question science has left to answer, how did life begin? Now, molecular biologists in Cambridge university have discovered tiny molecules of RNA which they say might provide some clues. Science journalist and author Philip Ball explains what we know and whether we’ll ever find the origins of life on earth.
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