名词
中文翻译：润滑孔
同义词：
['lubrication hole', 'oil hole', 'lubricating opening']
例句：
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1. The machine needs to be lubricated regularly to ensure smooth operation.
这台机器需要定期润滑，以确保顺畅运行。
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2. The technician carefully removed the lubricating hole and replaced it with a new one.
技术员仔细地取出了润滑孔并换上了一个新的。
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3. The lubricating hole in the engine is essential for preventing wear and tear.
发动机中的润滑孔对于防止磨损至关重要。