说起自行车
When it comes to bicycles
以上为机器翻译结果，长、整句建议使用 人工翻译 。
说起自行车，很多人认为在很多的大城市，它已经过时了。
Speaking of bicycle, some people think it has outdated in many big cities.
youdao
克里斯蒂安·法雷尔说起初他对共享单车很是担忧，但他承认：“我很高兴看到人们骑自行车。”
Christian Farrell said initially he was concerned about bike-share, though, he admitted, "I was happy to see people on bikes."
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