名词
中文翻译：Unknown
同义词：
['trap', 'pulley', 'lever', 'winch']
例句：
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1. The engineer used a tractellum to lift the heavy machine.
工程师使用一个牵引装置来提升这台重型机器。
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2. The car was pulled by a tractellum attached to the rear axle.
汽车被一根连接到后轴的牵引装置拉动。
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3. The farmer used a tractellum to move his tractor across the field.
农民用一个牵引装置把他的拖拉机从田地里移动出来。