1、get down

使沮丧；使忧郁

At times when my work gets me down, I like to fantasize about being a farmer.

有时当工作让我沮丧时，我喜欢幻想自己是一个农场主。

俯身；跪下；趴下

She got down on her hands and knees on the floor.

她双手撑地跪在地上。

'Get down!' she yelled. 'Somebody's shooting!'

“趴下！”她大声喊道，“有人开枪！”

写下；记下

The idea has been going around in my head for quite a while and now I am getting it down on paper.

这个想法在我脑海里萦绕许久了，我现在就将它写在纸上。

（费力地）吞下；勉强咽下

I bit into a hefty slab of bread and cheese. When I had got it down I started talking.

我咬了一大块面包和奶酪，强咽下去之后开始说话。

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。