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、come up

走近;走到跟前

Her cat came up and rubbed itself against their legs.

她的猫跑上前来，在他们腿上蹭来蹭去。

He came up to me and said: 'Come on, John.'

他走到我跟前说：“快点，约翰。”

被提及;被讨论

The subject came up during a pre-dinner drink with our guests.

在与客人喝餐前酒的时候，有人提到了这个话题。

Jeane Kirkpatrick's name has come up a lot.

珍妮·柯克帕特里克的名字被多次提到。

即将发生;即将到来

Plan your activities so that you are rested and refreshed when something important is coming up.

做好日常规划，这样一旦发生大事，才能够从容不迫。

We do have elections coming up.

我们的确将要进行选举。