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、collapse
倒塌;塌下
A section of the Bay Bridge had collapsed.
海湾大桥有一段垮塌了。
The roof collapsed in a roar of rock and rubble.
屋顶轰隆一声塌了下来,碎石瓦砾落了一地。
(体系或机构)崩溃,瓦解,突然失败
His business empire collapsed under a massive burden of debt.
他的商业帝国无力承担沉重的债务负担而垮掉了。
This system has collapsed in most countries where it ruled.
这一体系在其占统治地位的大多数国家都失败了。
(因生病或虚弱)突然倒下,昏倒
He collapsed following a vigorous exercise session at his home.
在家剧烈运动了一阵后他突然昏倒了。
It's commonplace to see people collapsing from hunger in the streets.
在街上看见有人饿晕是很平常的事。