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 across

（使）被理解；把…讲清楚

Officers felt their point of view was not getting across to ministers.

官员们感觉自己的观点并未准确地传达到大臣们那里。

I had created a way to get my message across while using as few words as possible.

我想出了一种能言简意赅地表达自己意思的方法。