back-up

汉语翻译

【计】 后援; 备份
【医】 后盾(在大气中高压电流所通过距离)

英语解释

名词 back-up:

an accumulation caused by clogging or a stoppage同义词：backupsomeone who takes the place of another (as when things get dangerous or difficult)同义词：stand-in, substitute, relief, reliever, backup, backup man, fill-ina subordinate musical part; provides background for more important parts同义词：accompaniment, musical accompaniment, backup, support(computer science) a copy of a file or directory on a separate storage device同义词：backup, computer backupthe act of providing approval and support同义词：backing, backup, championship, patronage

动词 back-up:

give moral or psychological support, aid, or courage to同义词：support, back upmove backwards from a certain position同义词：back up, back off, back downestablish as valid or genuine同义词：back, back upmake a copy of (a computer file) especially for storage in another place as a security copy同义词：back upbecome or cause to become obstructed同义词：clog, choke off, clog up, back up, congest, choke, foul

例句

The police had military back-up.警方有军队作後盾。