断送的英文：
forfeit; ruin

参考例句：

Complete loss of all one's money,resources or prospects
(金钱、资财的)完全丧失;(前途的)断送

He knew it was political suicide to refuse the offer.
他知道拒绝这一提议会断送他的政治前程。

I should intensely dislike being wiped out over such an issue.
我极不愿意为这么一个问题断送自己。

One should not wreck a young man's career for a single boyish indiscretion
人们不要因为一件幼稚的轻率举动就断送青年人的前程。

Betraying a trust is a very quick and painful way to terminate a friendship.--Ralph Waldo Emerson, American thinker
背信弃义会迅速而痛苦地断送友谊。美国思想家爱默生

The best gifts, from a woman's point of view, are those that are on-going, rather than flamboyant.
从女人的角度出发，最好是经常不断送的礼物，而不是华丽的礼物。

forfeit是什么意思：
n. 没收物；罚金
adj. 被没收的；被罚的
v. 失去；丧失

Your tuition will be forfeit.
您的学费将被没收。

That is the forfeit he must pay.
这是他必须付的罚金。

His lands were forfeit.
他的土地被国家没收了。

If you lose the game, you will have to pay a forfeit.
如果你比赛输了，就得受罚。

To forfeit(bail)by failing to appear in court.
丧失，被没收由于没出庭而失去（保释）

ruin是什么意思：
v. 毁坏，破坏，糟蹋，使破产
n. 毁坏，破坏，破产，祸根，残垣断壁

The abundance of money ruins youth
钱多毁青年

Falling or fallen into ruin;dilapidated
倒塌的；残破的；摇摇欲坠的

Women have been my ruin.
女人一直是我的祸根。

The tower stood amidst the ruins.
塔矗立在废墟中。

Everything has come to ruin.
一切都崩溃了。