1PHRASAL VERB 支持,证实(某种说法) If someone or something backs up a statement, they supply evidence to suggest that it is true. 支持,证实(某种说法) [Also VERB n PREPOSITION]
Radio signals received from the galaxy's centre back up the black hole theory. [VERBPREP. noun]
从该星系中心收到的无线电信号证实了黑洞理论。
Her views are backed up by a 1989 Home Office report on crime. [VERBPREP. noun (not pronoun)]
2PHRASAL VERB 备份(文件) If you back up a computer file, you make a copy of it which you can use if the original file is damaged or lost. 备份(文件) [computing]
Make a point of backing up your files at regular intervals. [VERBPREP. noun]
一定要定期备份文件。
I get so annoyed when I lose work because I've forgotten to back it up. [VERB noun PREP.]
当我因为忘了备份把完成的工作弄丢时,真是懊恼极了。
3PHRASAL VERB 将…付诸实施 If an idea or intention is backed up by action, action is taken to support or confirm it. 将…付诸实施 [Also VERB n PREPOSITION]
The Secretary General says the declaration must now be backed up by concrete and effective actions. [beVERB-ed PREP.]
秘书长说现在必须将宣言付诸具体有效的行动。
It is time the Government backed up its advert campaigns with tougher measures. [VERBPREP. noun]
是政府采取更严厉的措施来兑现其宣传承诺的时候了。
4PHRASAL VERB 支持(某人) If you back someone up, you show your support for them. 支持(某人) [Also VERBPREPOSITION n]
His employers, Norfolk social services, backed him up. [VERB noun PREP.]
他的雇主—诺福克社会服务中心给予了他支持。
5PHRASAL VERB 证实(某人)的说法 If you back someone up, you help them by confirming that what they are saying is true. 证实(某人)的说法 [Also VERBPREPOSITION n]
The girl denied being there, and the man backed her up. [VERB noun PREP.]