It contains forms of hydrogen and oxygen that can mark, or label, these elements within body water.

VOA: special.2011.07.27

Second thing I want to note is, the little hash mark or the pound sign, that's identifying a comment.

我想要说的第二件事是，这个小斜杠或者是井字号，这是用来标注注释的。

麻省理工公开课 - 计算机科学及编程导论课程节选

And Mark is extraordinary that way as are many of the best entrepreneurs or executives that we've met.

马克就像我们见过的,许多优秀企业家或执行官一样,特别善于倾听。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

My back's crookedlike a question mark. Next to Mama,no one ever talked to me or asked me questions.

VOA: standard.other

I may or may not get back to this today, but in this question mark is the secret of deconstruction, all right?

今天我们可能不会讲到这，但是这个问号里的,是结构主义的关键秘密，知道了吧？

耶鲁公开课 - 文学理论导论课程节选

Any of these or do they all seem on the mark?

还有什么是你们觉得不对劲的

耶鲁公开课 - 生物医学工程探索课程节选

I think it's a remarkable dynamic that Mark started this company in 2004 and that first generation the first nine or ten years of the Internet did not have a Facebook-like company that was thinking through it in a simple way.

我认为马克在2004年开办的这个公司的影响巨大,因为互联网初期的那代人用了九、十年,都没能创办一家像脸谱网一样的公司,能用简单的思维考虑问题。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选