| 词汇 | back up |
| 释义 | back up [phrasal verb] 1 a : to move backward后退；倒退 The car backed up slowly.汽车缓缓后退。 Could you back up a little to give me some room?你能往后退点给我腾出一些地方吗？ — sometimes used figuratively有时用作比喻 Wait, let's back up for a second. [=let's go back to what we were discussing earlier]等等，咱们还是暂且回到刚才的话题。 b back (a vehicle) up or back up (a vehicle) : to move (a vehicle) backward倒（车） Could you back your car up a little to give me some room?你能把车往后倒点给我腾出点地方吗？ 2 a : to become blocked so that movement or flow is slowed or stopped堵塞；淤积 Traffic backed up for miles because of the accident.这个事故使交通堵塞了数英里。 The drain backed up [=clogged] and had to be unclogged by a plumber.下水道堵塞了，必须请管道工来疏通才行。 b back (something) up or back up (something) : to cause (something) to become blocked使淤积；使堵塞 The accident backed up traffic for miles. = Traffic was backed up [=(Brit) tailed back] for miles because of the accident.这个事故使交通堵塞了数英里。 The drain was backed up.下水道堵塞了。 3 back (someone or something) up or back up (someone or something) : to give help or support to (someone or something)支持；帮助 I'll back you up if I think you're right.如果我认为你是对的，我就支持你。 She backed her argument up with written evidence. = Written evidence backed her argument up.她用书面证据来支持自己的论点。 It's time to back up your words with deeds!是用行动来证明你的话的时候了！ — see also 4back 1e (above) 4 back (something) up or back up (something) computers : to make a copy of (a computer file or data) to protect it from being lost备份；存储 Remember to back up your work before you log off.记得在退出前备份你的文件。 — see also backup back |
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