backed up基本解释
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backed up
backed up是什么意思？
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- 单词
- backed up
backed up 学习重点
- 先确认 backed up 的核心释义，再结合音标完成发音记忆。
- 阅读下方例句、词组和双语内容，可以判断 backed up 在真实语境中的用法。
更新时间：2026-07-09 02:27:28
- 英英释义
动词 back up:
- give moral or psychological support, aid, or courage to
- move backwards from a certain position
- establish as valid or genuine
- make a copy of (a computer file) especially for storage in another place as a security copy
- become or cause to become obstructed
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