| 词汇 | back up |
| 释义 | back upback up1.■支持The policeman wouldn't have believed me if you hadn't backed me up.如果当时你不支持我, 警察是不会相信我的。He backed up his arguments with facts.他以事实支持自己的论点。2.■堵塞The accident backed up traffic.事故使交通堵塞。3.■往后退You'll have to back up and turn around.你将不得不往后退并转身。4.■复制Make sure you back up the disk before you turn the computer off.一定要先复制磁盘, 然后再关电脑。 |
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