back up的意思及造句是?

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back up的意思及造句是?
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back up的意思及造句是?
back up的意思及造句是?

back up的意思及造句是?
back up
1.支持
He would have lost his position if you hadn't backed him up.
假如你当初没有支持他,他可能已经失去职位了.
back-up
名词 n.
1.后援
Do you have any back-ups in case I cannot be there?
假如我不能来,你们有没有候补人员?
2.滞销货
3.贮藏
4.溢流
5.阻塞
形容词 a.
1.作支援的
2.作预备人手的

She took a annual leave that I must back up her job.

Could you please give it back to me？（归还） All sorts of rumors are going around（四处走动/流传） The price of cigarettes is going up（上涨/涨价） He put the sugar into the the coffee（把放入

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