名词
中文翻译：三轮车齿轮
同义词：
['tricycle gear', 'tricycle gears例句：1. The old man was busy adjusting the gears on his tricycle.（老人正在忙着调整他的三轮车上的齿轮。）2. The mechanic had to replace the gears on the tricycle because they were worn out.（因为齿轮磨损了，机械师不得不更换三轮车的齿轮。）']
例句：
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1. The old man was busy adjusting the gears on his tricycle.
老人正在忙着调整他的三轮车上的齿轮。
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2. The mechanic had to replace the gears on the tricycle because they were worn out.
因为齿轮磨损了，机械师不得不更换三轮车的齿轮。
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3.The kids loved riding their tricycles with the new gears installed.
孩子们喜欢带着新安装的齿轮的三轮车骑行。