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n (1)油(類)(thick liquid that will not mix with water，obtained from plants，animals and minerals)[U]：vegetable/cooking/olive/whale/tar～菜籽/烹調(diào)/橄欖/鯨魚/煤焦油; hair～發(fā)油;O～and water won't mix.油和水不相溶合。

(2)1)石油(petroleum)[U]：There is a lot of luck in drilling for～.鉆井采油很多時候要靠運(yùn)氣。There are four main areas of the world where deposits of～appear.世界上有四個已探明蘊(yùn)藏石油的主要地區(qū)?！玶ig/well/field/company 石油鉆塔/油井/油田/石油公司;2)由石油提煉成的各種油(substance derived from petroleum，such as substance used as fuel，as a lubricant，etc)[U](常構(gòu)成合成詞)：I must put some more～in the car.我的車必須再加點汽油。You should put some～on the hinges of that gate.It doesn't open easily.你應(yīng)該給大門的鉸鏈加點潤滑油，它不好打開。an～-heater/-lamp/-can 油取暖器/燈/壺;

(3)油畫(oil painting)[C](infml)：an exhibition of～s by Turner 特納的油畫展;

(4)油畫顏料(oil colours)[pl]：a portrait in～s 油畫像;

v 給(某物)加(潤滑)油(lubricate，supply，cover，or polish with oil)[T+n]：The machine will work better if it's～ed.這機(jī)器加了潤滑油會運(yùn)轉(zhuǎn)得更好。My bicycle needs～ing.我的自行車得上油了。She～ed herself with suntan lotion.她給自己涂上防曬油。

oil the wheels 用圓滑手段使事情順利進(jìn)行：He asked a friend to～the wheels so he could borrow money from the credit union.他請一個朋友幫助周旋一下以便能從信用社借錢。

→′oilcloth n油布;′oil-colour，′oil-paint 油畫(顏料);′oil-field n 油田;′oil′painting n 油畫;′oilskin n油布;′oily adj 油(膩)的;′oilcake n 油渣餅;′oiltanker n油輪