名词
中文翻译：摩擦
同义词：
['rub', 'friction', 'rubbing']
例句：
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1. The car's tires are getting worn out because of the constant friction with the road.
汽车的轮胎因为与路面的持续摩擦而磨损。
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2. The machine works smoothly because it is well-lubricated.
这台机器运行顺畅，因为它得到了良好的润滑。
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3. The friction between the two surfaces causes heat to be generated.
两个表面之间的摩擦会产生热量。