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、average
平均数；均值
Take the average of those ratios and multiply by a hundred.
算出那些比率的平均值再乘以100。
一般的;通常的;普通的
The average adult man burns 1,500 to 2,000 calories per day.
普通成年男子每天消耗的热量为1,500到2,000卡路里。
Packaging is about a third of what is found in an average British dustbin.
英国垃圾桶里平均约有1/3是产品包装。
平均起来；按平均值
American shares rose, on average, by 38%.
美国股票价格平均上涨了38％。
On an average we would be spending ￡300 per day.
平均下来，我们每天要花费300英镑。
