| 单词 | 换回 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔change〕You can change back unused dollars into pounds at the bank.你可以到银行把没有用掉的美元兑换回英镑。牛津高阶〔code〕It will need different microchips to reconvert the digital code back into normal TV signals.把数字信号重新转换回通常的电视信号需要另外的微芯片。柯林斯高阶〔hand back〕I am going to hand you back to our President for a few closing remarks.我讲完了, 下面换回我们的总统讲几句结束致辞。外研社新世纪〔switch back〕Some believe that once synthetic motor oil is used in a vehicle, you cannot switch back to conventional motor oil.有些人认为, 一旦给车用了合成机油, 就不能再换回常规机油了。外研社新世纪〔upgrade〕To exchange a possession for one of greater value or quality; trade up.以旧货换高价新货：换回比所给出的财物价值或质量更高的东西；以一物折价换进同类中较贵的事物美国传统 |
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