oil,

1.[u]石油；原油a thick liquid that is found in rock underground

2.[u]燃油；润滑油a form of petroleum that is used as fuel and to make parts of machines move smoothly

3.[u][c]食用油a smooth thick liquid that is made from plants or animals and is used in cooking

4.[u][c]防护油；润肤油；护发油a smooth thick liquid that is made from plants, minerals, etc. and is used on the skin or hair

5.[u]（绘画用）油彩coloured paint containing oil used by artists

1.~ sth给…加润滑油to put oil onto or into sth, for example a machine, in order to protect it or make it work smoothly

oil the wheels

（尤指在商业上或政治上）起促进作用to help sth to happen easily and without problems, especially in business or politics

1.油;油类;油状物

2.油画颜料;〈口〉油画作品

3.油布;油布雨衣[衣裤]

4.〈美俚〉恭维话,奉承话;鬼话,油滑的话

1.在...上涂油;给(机器等)上油,加油;把...浸在油中;弄滑

2.收买,行贿

3.使融化

4.(脂肪等)融化,熔化

5.(轮船等)加燃料油

1.a thick dark smooth liquid from under the ground, used for making gas and other fuels; relating to this liquid

2.a thick smooth liquid used in an engine, so it will work smoothly

3.a thick smooth liquid used in cooking and preparing food, and in medicines

4.a type of paint that contains oil; a painting made with paint that contains oil

5.a thick clear liquid that you use for protecting your skin or for making it soft; an essential oil

1.to put oil on something, for example to make it move easily, or so that things will not stick to it