| 例句 |
phrasal verb 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。 I'll back you up if they don't believe you. 如果他们不相信你，我会为你作证。 The writer doesn't back up his opinions with examples. 作者没用实例印证他的看法。 two doctors backed up by a team of nurses由一组护士辅助的两名医生 The rebels backed up their demands with threats. 反叛者以恐吓手段要挟。 It's a good idea to back up your files onto a memory stick. |