1、get through

完成（任务）；干完（工作等）

I think you can get through the first two chapters.

我想你能完成前两章。

度过，熬过（困难或不快的时期）

It is hard to see how people will get through the winter.

难以想象人们将怎样熬过这个冬天。

We couldn't get through a day without arguing.

我们没有一天不拌嘴的。

使理解；使明白

An old friend might well be able to get through to her and help her.

也许一个老朋友能让她明白并且帮助她。

The message was finally getting through to him.

他终于明白了这一点。

（法案、提案）正式通过，获得批准

if his referendum law failed to get through.

如果他的全民公决法案未获通过

Such a radical proposal would never get through parliament.

如此激进的提案永远不会得到议会的批准。

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。