与消耗燃料的机动自行车不同，人力车不会产生污染。

Unlike auto rickshaws, which burn fuel, cycle rickshaws produce no pollution.

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那些买机动自行车和小轮摩托的人也许不需要上摩托车训练课。

People who buy mopeds or other scooters may not even need a motorcycle license.

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充气管道、速度惊人的有轨电车、机动自行车等等，这些只是常见的蒸汽动力交通工具中的几个例子。

Pneumatic tubes, incredibly fast railroad cars, and powered bicycles are just some examples of the shaky steam powered vehicles that are common.

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