back-up 详细解释
back-up
n. 后援, 备份, 备用
n.
1. 后援
Do you have any back-ups in case I cannot be there?
假如我不能来, 你们有没有候补人员?
2. 滞销货
3. 贮藏
4. 溢流
5. 阻塞
a.
1. 作支援的
2. 作预备人手的
词义辨析
同义参见:
英英释义
名词 back-up:
an accumulation caused by clogging or a stoppage
同义词：backup
someone 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-in
a 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 backup
the 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
move backwards from a certain position
同义词：back up, back off, back down
establish as valid or genuine
make a copy of (a computer file) especially for storage in another place as a security copy
同义词：back up
become or cause to become obstructed
同义词：clog, choke off, clog up, back up, congest, choke, foul
补充
back-upback-up1.备份例句
1. no police back-up could be expected.不能指望警方援助。 2. I've got a security force as back-up.我有一支保安队作为后备力量。 3. [as modifier]a back-up generator.后备发电机。 4. The police officer requested urgent back-up from the rest of the team.警察要求得到队里其他人员的紧急支持。 5. Always make a back-up of your files.每次都要为计算机文件复制副本。