1、underneath

在…下面；在…底下

The device exploded underneath a van.

该装置在一辆货车底下发生了爆炸。

using dogs to locate people trapped underneath collapsed buildings.

利用狗来寻找被困在倒塌的楼房下面的人

在下表面；在底面

Check the actual construction of the chair by looking underneath.

看看椅子的下面，检查一下它的实际构造。

The sand martin is a brown bird with white underneath.

崖沙燕是一种褐羽白腹的鸟。

在内心深处；心底里

He was as violent as Nick underneath.

在内心深处，他和尼克一样暴躁不安。

Underneath, Sofia was deeply committed to her husband.

索菲娅从内心里对丈夫忠贞不贰。

2、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。