留学群英语词汇释义、例句、发音与用法查询

更新时间:2026-07-07 23:44:00

backed up

backed up是什么意思?

毒品麻醉的

单词
backed up
毒品麻醉的
  • 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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