back-up

名词 n. 形容词 adj.
中文释义

英文释义

名词 n.
  1. Alternative form of backup. alt-of,alternative
    — Despite deploying a contingency workforce of fully trained non-striking and non-union back-up staff, Network Rail was forced to issue a limited timetable with only 20% of services running on June 21, 23 and 25.
形容词 adj.
  1. Alternative form of backup alt-of,alternative,not-comparable

词形变化

back-ups plural

词源

词源 1
Etymology tree
English back updeverb.
English back-up
Deverbal from back up.
词源 2
Etymology tree
English back updeverb.
English back-up
Deverbal from back up.
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