| 词汇 | back up |
| 释义 | back up A. intransitive verb ① (go backwards) «person, horse» 后退 ; «driver» 倒车 ; «car» 向后倒 ▸ to back up a few yards 后退几码 ② Computing 备份 ③ (accumulate) «water» 聚集 ④ (become blocked) «drains» 堵塞 ⑤ (tail back) «traffic» 拥塞 B. [backsth up, back up sth] transitive verb ① (support) «facts, evidence» 证实 ‹claim, case, theory›▸ to back sth up with sth; 通过某事物来支持某事物 ▸ to back up demands with threats 威胁着要满足要求 ② (make go backwards) «driver» 倒 ‹car›; «rider» 使…后退 ‹horse›③ Computing 备份 ‹data, file›④ (cause to tail back) 阻塞 ‹traffic›C. [back sb up, back up sb] transitive verb 支持 ‹person› |
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