1、get out

逃离；被迫离开

They probably wanted to get out of the country.

他们或许想逃离这个国家。

I told him to leave and get out.

我叫他滚开。

退出（组织）；撤销（承诺）

I wanted to get out of the group, but they wouldn't let me.

我想退出这个团体，但是他们不同意。

Getting out of the contract would be no problem.

撤销这个合同不会有任何问题。

（消息、信息等）泄露，为人所知

If word got out now, a scandal could be disastrous.

如果消息现在传出去，可能会是灾难性的丑闻。

Once the news gets out that Armenia is in a very critical situation, I think the world will respond.

我认为亚美尼亚局势非常严峻的消息一旦披露，全世界都将作出反应。

2、challenge

挑战;难题

I like a big challenge and they don't come much bigger than this.

我喜欢大的挑战，而所有挑战中再没有比这更大的了。

The new government's first challenge is the economy.

新政府面临的第一个难题是经济问题。

(成功地)应对挑战，迎接挑战

The new Germany must rise to the challenge of its enhanced responsibilities.

一个崭新的德国必须迎接挑战，承担更多的责任。

They rose to the challenge of entertaining 80 schoolchildren for an afternoon.

他们一个下午成功接待了80名学童。

怀疑，质疑(真实性、价值、权威等)

Democratic leaders have challenged the president to sign the bill.

民主党领袖对总统签署这项法案提出了质疑。

The move was immediately challenged by two of the republics.

此项动议立即遭到其中两个共和国的反对。