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、represent

代理，代表（个人或团体）

the politicians we elect to represent us.

我们选举出来代表我们的政界人士

The offer has yet to be accepted by the lawyers representing the victims.

受害者的代理律师还没有接受这个提议。

使有代表性

Women are already well represented in the area of TV drama.

女性在电视剧领域占据了一席之地。

In New Mexico all kinds of cuisines are represented.

在新墨西哥州， 有各种各样的烹饪方法。