科研之友
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<正>亚伦·鲍威尔发明了一种可以运货的自行车,快来看看这种自行车有哪些优势吧。"That’s the coolest thing I’ve ever seen,"Aaron Powell recalled thinking. He was vacationing in Denmark in 2016 when he saw a parent on a bicycle, and knew what his next business would be.He was looking at a cargo bike for the very first time.
- 出版日期2021
