A fixed-gear bike is a bicycle whose pedals rotate at all times, even when coasting.

固定齿轮自行车是一种需要人一直不停地踩的自行车，即使在滑行时也要一直踩。

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So if you see a bearded intruder on a fixed-gear bike in your neighbourhood, welcome him.

所以如果你在你住的社区看到一位骑着自行车、一脸络腮胡子的不速之客的话，就欢迎他吧。

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With that gorgeous-looking, chunky chainring and the possibility of candy-colored belts, combined with an almost silent operation, make me want to try one out on my fixed-gear bike.

皮带轮外观精巧漂亮，皮带涂以糖果色，运转几乎听不到声响。 人们纷纷想在自己的自行车上试用。

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And London-based architect Andy Martin teamed up with furniture company Thonet to design a gorgeous bentwood fixed-gear bike.

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On the other hand, the fixed-gear bike, currently popular with hipsters and cycling purists, is rather too Spartan, not to mention tough on the calves.

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