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N-MASS
石油；燃料油；润滑油
Oil is a smooth, thick liquid that is used as a fuel and for making the parts of machines move smoothly. Oil is found underground.
例句
The company buys and sells about 600,000 barrels of oil a day.
该公司每天买卖约60万桶石油。
...the rapid rise in prices for oil and petrol.
石油与汽油价格的急剧上涨
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VERB
给…加润滑油；给…上油
If you oil something, you put oil onto or into it, for example to make it work smoothly or to protect it.
例句
A crew of assistants oiled and adjusted the release mechanism until it worked perfectly...
一班助手给排放装置加润滑油并作调试，直到其达至理想工作状态。
The leather may need to be oiled every two to three weeks in order to retain its suppleness.
为了保持皮革的柔韧性，可能两三周就要上一次油。
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N-MASS
食用油；植物油
Oil is a smooth, thick liquid made from plants and is often used for cooking.
例句
Combine the beans, chopped mint and olive oil in a large bowl...
将菜豆、切碎的薄荷和橄榄油放在大碗里搅拌。
Drop the slices into the oil and fry until golden brown.
将切片倒进油里，煎至金棕色。
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N-MASS
润肤油；沐浴油
Oil is a smooth, thick liquid, often with a pleasant smell, that you rub into your skin or add to your bath.
例句
Try a hot bath with some relaxing bath oil...
用舒缓沐浴油洗个热水澡吧。
My sister smeared herself with suntan oil and slept by the swimming pool all day.
我姐姐抹了些防晒油，一整天睡在游泳池边。
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N-COUNT
同 oil painting
Oils are oil paintings .
例句
Her colourful oils and works on paper have a naive, dreamlike quality.
她那些色彩斑斓的油画与纸上作品给人一种天真、梦幻般的感觉。
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N-PLURAL
油彩；油画颜料
When an artist paints in oils, he or she uses oil paints.
例句
When she paints in oils she always uses the same range of colours.
她创作油画时总是使用同一组色彩。
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PHRASE
平息风波；调停争端
If you pour oil on troubled waters, you try to calm down a difficult situation.
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PHRASE
使…顺利进行；使…正常运作
If someone or something oils the wheels of a process or system, they help things to run smoothly and successfully.
例句
On all such occasions, the king stands in the wings, oiling the wheels of diplomacy.
在所有这样的场合，国王总是身处幕后确保外交活动的顺利进行。