What is marriage? An irrevocable vow.

婚姻是什么呢？是不能取消的誓言。

youdao

What is marriage? Marriage is love's gravestone.

婚姻是什么，婚姻是爱情的坟墓。

youdao

Another day, Plato asked his teacher, "What is MARRIAGE?"

又有一天，柏拉图问老师什么是婚姻？

youdao

"If your marriage is equal, holistically, in what you contribute it makes very little difference as to who's earning more money."

VOA: special.2010.02.19

I can only imagine though, at this point in the semester, what will become Milton's eventual championing of marriage is pretty hard to imagine, in part because we're just devoting our second class to a literary work given almost entirely to the virtue of chastity.

然而我只能认为，在学期的这个时候，什么将成为弥尔顿婚姻的最终捍卫者,一定难以想象，一部分是因为,我们的第二节课一直在讨论,关于贞洁的美德的作品。

耶鲁公开课 - 弥尔顿课程节选

That is what marriage is all about.

CNN: LETTERS AND COMMENT

One thing CNN's calculator makes clear is that, wherever they live, Americans are in the middle of a national conversation about what marriage is, why it matters, and the consequences of redefining it.

CNN: Court shouldn't rewrite law on gay marriage

Indeed, why should the state or courts at any level have any input when it comes to defining what marriage is, or should be?

FORBES: Supreme Court Must Protect The Individual Right To Marry, Not Limit Individual Rights