magnetic mechanic oil seal 磁力机械油封
oil burner mechanic 油燃烧器修理工
Air Conditioning Oil Heating Mechanic 水暖工
oil drill rig mechanic 石油钻机技工
oil burner mechanic apprentice 油燃烧器技工学徒
oil burner mechanic helper 油燃烧器机械帮手
oil pump station mechanic 油泵站机械师
oil-drilling rig mechanic 石油钻探钻机技工的
residential oil burner mechanic 住宅油刻录机机械师
If there is a leak, have an auto mechanic replace any problematic gaskets or oil seals.
如果发动机漏油，则让一个汽车技工更换掉所有有问题的垫圈和盖子。
The mechanic drained all the oil from the engine.
机械工将发动机中的油全部放走。
For instance, I know a capable company boss, who is also an expert in private cars and very skillful at changing car oil, even more efficiently than a mechanic.
例如，我认识一位出色的公司老板，他很爱车，并精通如何给汽车换油，甚至比专业技工还快，但是他自己的车，大部分时间，还是开到专业车店去换油。
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