backup

/'bækʌp/ uk　 词频 #5476

英语专业八级英语专业四级

backup 是什么意思

中文释义

n. 倒车, 后退, 后援, 支持, 阻塞

vt. 做备份

a. 候补的, 支持的

[计] 备份; DOS外部命令:通常使用于将硬磁盘上指定的文件复制到软盘上

英文释义

n. an accumulation caused by clogging or a stoppage

n. (computer science) a copy of a file or directory on a separate storage device

backup 的真实例句

以下例句摘自真实英文文章，看看 backup 在自然语境里怎么用：

In addition, many datacenters use dozens of large diesel-powered backup generators, which emit carcinogenic particulate matter.

—— Nearly half of US children are breathing dangerous levels of air pollution, report warns

Batteries, when combined with cheap solar, can limit the need for fossil fuel-powered backups.

—— Global growth in solar "the largest ever observed for any source"

If one plane fails, the nationwide network guarantees availability for Jet Card members, with backups waiting in the wings.

—— Flying Private Is Taking Off — And It’s No Longer Just for Celebrities

The collected energy feeds directly into a small backup battery, enough to charge a smartphone or earbuds on the go.

—— mushroom-inspired devices convert wasted energy into reusable power to charge gadgets

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