1、breakdown

（关系的）破裂；（计划、讨论等的）失败，结束

the breakdown of talks between the US and EU officials.

美国和欧盟官员间谈判的破裂

the irretrievable breakdown of a marriage.

无法挽回的婚姻破裂

神经衰弱；精神崩溃

My personal life was terrible. My mother had died, and a couple of years later I had a breakdown.

我个人的生活一团糟。母亲去世了，几年后我又患上了神经衰弱。

They often seem depressed and close to emotional breakdown.

他们经常显得很沮丧，精神濒于崩溃的边缘。

（汽车或机器的）故障，损坏

Her old car was unreliable, so the trip was plagued by breakdowns.

她的旧车老不听使唤，一路上总是出故障。

If you stop on the hard shoulder, wait for the police or breakdown service.

如果你的车坏在路肩上了，就得等警察或修理站来帮忙。

2、discover

发现(以前不知道的事实)

She discovered that they'd escaped.

她发现他们已经逃跑了。

I discovered I was pregnant.

我发现自己怀孕了。

(第一个)发现

the first European to discover America.

第一个发现美洲大陆的欧洲人

In the 19th century, gold was discovered in California.

19 世纪时，在加利福尼亚发现了金子。

发现，发掘(不为人所知的演员、音乐人等艺人)

The Beatles were discovered in the early 1960's.

甲壳虫乐队于20世纪60年代初为世人所知。