backup
C1英 /ˈbækʌp/美 /ˈbækʌp/
释义
noun
备用支援
extra help or support that you can get if necessary
“The police had backup from the army.”
在真实视频里记住 backup
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The police had backup from the army.
备用支援
backup· 备用支援
去视频里学 backup →
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