1、work out

想出，得到(解决方法);解(谜)

Negotiators are due to meet later today to work out a compromise.

谈判人员定于今天晚些时候进行会谈，商定一个折中方案。

It took me some time to work out what was causing this.

我花了一些时间才弄清此事的起因。

计算出，解出（数学题答案）

It is proving hard to work out the value of bankrupt firms' assets.

清算破产公司的资产值其实很困难。

When asked what a 40.35 meal for five people would cost each diner, they were unable to work it out.

问到5个人吃一顿饭花了40.35英镑，每人要出多少钱时，他们算不出来。

(如期）发生；进展(顺利)

Things just didn't work out as planned.

事情根本没有按计划进行。

I hope it will work out well.

我希望进展顺利。

2、expand

扩充;扩大;增加

Engineers noticed that the pipes were not expanding as expected.

工程师注意到管道并没有如预期那样膨胀。

The money supply expanded by 14.6 per cent in the year to September.

截至9月，当年的货币供应增加了14.6％。

扩大；发展；扩展

The popular ceramics industry expanded towards the middle of the 19th century.

到19世纪中期，大众制陶业得到了发展。

The interest rate's coming down. I'll be able to expand or stay in business.

利率正在降低，我可以扩大公司或者维持经营。