本发明涉及一种具有助力装置的脚踏车，尤其是指具有助力 装置的自行车、三轮脚踏车或四轮脚踏车。

The invention relates to a bike with an assistor, in particular to a bicycle, tricycle or tetra-cycle with an assistor, comprising a frame, a rear axle, a front axle and a middle shaft.

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在前往马丁原生木材厂的路上，我超过一个戴着草帽骑脚踏车的人和一辆四轮马车。

I passed men in straw hats pedaling bicycles and driving horse-drawn buggies on my way to Martin's Native Lumber.

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