单词 | back up |
释义 | ● ˌback ˈup ● ˌback sth↔ˈup to move backwards , especially in a vehicle 后退;倒(车)◆ You can back up another two feet or so . 你可以再退两英尺左右。◆ I backed the car up to the door . 我把车倒到门前。See also back |
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