1、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。
初次接触(某活动并乐在其中)
I wish I'd discovered photography when I was younger.
我要是早点接触到摄影技术就好了。
Discover the delights and luxury of a private yacht.
体验私人游艇的乐趣和奢华。
2、build up
（使）积聚；（使）逐渐增加
The regime built up the largest army in Africa.
该政权逐渐建立起一支非洲规模最大的军队。
The collection has been built up over the last seventeen years.
在过去的17年中，收藏的规模不断扩大。
增强…的体质；建立…的信心
Build her up with kindness and a sympathetic ear.
用友善和富有同情心的倾听来重拾她的信心。
Dr. Johnson and I have been trying to build him up physically.
约翰逊医生和我一直试图增强他的体质。
吹捧；抬举
The media will report on it and the tabloids will build it up.
媒体会报道此事，小报则会大肆吹捧。
Historians built him up as the champion of parliament.
历史学家把他誉为议会的捍卫者。