名词
中文翻译：润滑剂
同义词：
['lubricant', 'grease例句：1. The engine needs anew lubricant to keep itrunning smoothly.（发动机需要新的润滑油来保持顺畅运行。）']
例句：
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1. The engine needs anew lubricant to keep itrunning smoothly.
发动机需要新的润滑油来保持顺畅运行。
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2. The car's brakes arein need of some lubrication.
汽车的刹车需要一些润滑。
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3. The oldmachine was difficult to startbecause of the lack of lubrication.
旧机器很难启动，因为缺乏润滑。