查单词 · 学外语

精品英语词典

首页backupbackup考试真题

backup

英 ['bækʌp] 美['bæk,ʌp]

英英释义考试真题实用场景例句

n. 支持；后援；阻塞
adj. 支持的；候补的
vt. 做备份

考试真题

And so the old technology remains as a backup.

Karen said she was available as a backup.