第6级学习进度:1/1000
lubricate  [ˈlu:brɪkeɪt]  1
基本释义:vt.使润滑;vi.加润滑油
英英释义:to use a substance such as oil to make a machine operate more easily , or to prevent something sticking or rubbing
参考例句
1.Mineral oils are used to lubricate machinery. 矿物油被用来润滑机器。
2.You should lubricate the wheels of your bicycle once a month. 你应该每个月给自行车轮子加一次润滑油。
   
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