1.vow to 誓言
例句:I vow to thee, my country, all earthly things above.
我向你起誓,我親愛的祖國,我愿在你面前獻上世間的一切 。
2.fail to 失敗
例句:Some schools fail to set any homework.
有些學校沒有布置任何作業 。
3.oil producer 石油生產國
例句:The Soviet Union was the world's leading crude oil producer.
蘇聯曾是世界上最重要的原油生產國 。
4.oil price 石油價格
例句:The oil companies have lost their power over oil price and oil production.
石油公司已經失去了對油價和石油產量的控制 。