1、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。

2、go back

追溯到；回溯到

The feud with the Catholics goes back to the 11th century.

与天主教的夙怨可以追溯到11世纪。

Our association with him goes back four years.

我们同他的合作是从4年前开始的。

回到（过去）；回顾

If you go back to 1960, you'll find that very few jobs were being created.

如果回到1960年，你会发现工作机会寥寥无几。

3、version

变化形式;变体;版本

an updated version of his book.

他的书的最新版本

Ludo is a version of an ancient Indian racing game.

鲁多是由一种古印度竞赛游戏演变而来。

（某人对某事件区别于他人的）描述，说法

Yesterday afternoon the White House put out a new version of events.

昨天下午，白宫对事件给出了另一种说法。

She and her friends wanted to go public with their version of the incident.

她和朋友们想把他们看到的事情经过公之于众。