1 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. 石油；燃料油；润滑油
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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。
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...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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...a small oil lamp.
一盏小油灯
2 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. 给…加润滑油；给…上油
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A crew of assistants oiled and adjusted the release mechanism until it worked perfectly. [VERB noun]
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。
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The leather may need to be oiled every two to three weeks in order to retain its suppleness. [VERB noun]
为了保持皮革的柔韧性，可能两三周就要上一次油。
SYN lubricate, grease, make slippery
3 N-MASS [usually n NOUN] 食用油；植物油 Oil is a smooth, thick liquid made from plants and is often used for cooking. 食用油；植物油
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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。
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Drop the slices into the oil and fry until golden brown.
将切片倒进油里，煎至金棕色。
4 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. 润肤油；沐浴油
5 N-COUNT [usually plural] 同 oil painting Oils are oil paintings . 同 oil painting
6 N-PLURAL 油彩；油画颜料 When an artist paints in oils, he or she uses oil paints. 油彩；油画颜料
7 See also: castor oil crude oil olive oil
8 PHRASE [VERB inflects] 平息风波；调停争端 If you pour oil on troubled waters, you try to calm down a difficult situation. 平息风波；调停争端
9 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. 使…顺利进行；使…正常运作
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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。
10 to burn the midnight oil→see: midnight
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