Were it left to me to decide whether we should have a city without bikes or one without cars.
如果让我来决定我们要一个没有自行车的城市,还是要一个没的汽车的城市。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上,笔尖落在地板上的一张纸上,