1、expand

擴(kuò)充;擴(kuò)大;增加

Engineers noticed that the pipes were not expanding as expected.

工程師注意到管道并沒有如預(yù)期那樣膨脹。

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

截至9月，當(dāng)年的貨幣供應(yīng)增加了14.6％。

擴(kuò)大；發(fā)展；擴(kuò)展

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

到19世紀(jì)中期，大眾制陶業(yè)得到了發(fā)展。

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

利率正在降低，我可以擴(kuò)大公司或者維持經(jīng)營。

2、go back

追溯到；回溯到

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

與天主教的夙怨可以追溯到11世紀(jì)。

Our association with him goes back four years.

我們同他的合作是從4年前開始的。

回到（過去）；回顧

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

如果回到1960年，你會發(fā)現(xiàn)工作機(jī)會寥寥無幾。

3、version

變化形式;變體;版本

an updated version of his book.

他的書的最新版本

Ludo is a version of an ancient Indian racing game.

魯多是由一種古印度競賽游戲演變而來。

（某人對某事件區(qū)別于他人的）描述，說法

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

昨天下午，白宮對事件給出了另一種說法。

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

她和朋友們想把他們看到的事情經(jīng)過公之于眾。