1、commit

犯(罪);做(坏事)

I have never committed any crime.

我从来没犯过罪。

This is a man who has committed murder.

这是一个杀人犯。

拨出，调配(资金、资源等)

They called on Western nations to commit more money to the poorest nations.

他们呼吁西方国家向极端贫困国家投入更多的钱。

The government had committed billions of pounds for a programme to reduce acid rain.

政府已经给一个旨在减少酸雨的方案拨了几十亿英镑。

承诺，保证(做);忠于(某人)

I would advise people to think very carefully about committing themselves to working Sundays.

我建议大家慎重考虑一下答应周日工作的问题。

I'd like a friendship that might lead to something deeper, but I wouldn't want to commit myself too soon.

我希望拥有一份能进一步发展的友谊，但又不想太快作出承诺。

2、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！”

（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。