1、back up

支持，证实（某种说法）

Radio signals received from the galaxy's centre back up the black hole theory.

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.

1989年内政部的一份犯罪报告印证了她的观点。

备份（文件）

Make a point of backing up your files at regular intervals.

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.

当我因为忘了备份把完成的工作弄丢时，真是懊恼极了。

将…付诸实施

The Secretary General says the declaration must now be backed up by concrete and effective actions.

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.

是政府采取更严厉的措施来兑现其宣传承诺的时候了。

2、detect

发现;查出;测出

a sensitive piece of equipment used to detect radiation.

一件用于探测辐射的灵敏设备

Most skin cancers can be cured if detected and treated early.

如果早发现早治疗，大多数皮肤癌是可以治愈的。

觉察;发觉

Arnold could detect a certain sadness in the old man's face.

阿诺德能觉察到老人脸上的一丝悲伤。