backup
美['bækʌp] 英['bækʌp]n. 后备 近义词：support，accompaniment，substitute，fill-in，encouragement，help，moralsupport，holdup，stoppage，resort，gridlock，utility，snarl，standby，reserve，reinforcement，copy，duplicate，replica，stand-by，relief，backing，computerbackup，patronage，stand-in，championship，musicalaccompaniment，reliever，
英英释义
Noun
- an accumulation caused by clogging or a stoppage;
"a traffic backup on the main street" "he discovered a backup in the toilet"
- someone who takes the place of another (as when things get dangerous or difficult);
"the star had a stand-in for dangerous scenes" "we need extra employees for summer fill-ins"
- a musical part (vocal or instrumental) that supports or provides background for other musical parts
- (computer science) a copy of a file or directory on a separate storage device;
"he made a backup in case the original was accidentally damaged or erased"
- the act of providing approval and support;
"his vigorous backing of the conservatives got him in trouble with progressives"
例句
用作名词(n.)
- When the main system fails, the backup system take over.当主系统不能工作时，后备系统立即投入工作代替之。
- We offer a free backup service to customers.对顾客我们提供免费配套服务。
- The backup job resides on the primary server.备份作业驻留在主服务器上。
