名词
中文翻译：开关润滑油
同义词：
['switch oil', 'switch fluid']
例句：
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1.The mechanic switched the engine's oil after the oil filter was replaced.
更换了油滤后，机械师更换了发动机的机油。
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2.The car needed a new set of spark plugs and switch grease to get it running again.
这辆车需要更换一套火花塞和开关润滑油才能再次启动。
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3.The engineer switched the brake pads with fresh ones before starting the test run.
工程师在开始测试之前更换了刹车片。