Two children in the family each have two diseases caused by a single gene.

VOA: special.2010.03.23

So what this means, if you used to have two children and now you have four, how do you provide for the extra two?

比如一家过去有两个孩子,现在多了两个,多了两张嘴,怎么办呢

耶鲁公开课 - 古希腊历史简介课程节选

One is if you have to coordinate how you're going to give this vaccine to two million children across the U.S.

首先必须协调合作,如何才能将疫苗,分发给全美国二百万孩子

耶鲁公开课 - 生物医学工程探索课程节选

The W.H.O.says since 1988, more than two billion children around the world have been immunized against polio.

VOA: standard.2010.08.02

So I think it a lot of children I have. Bilingual children and a lot of them have two languages or even three languages.

就此我经常反思,我自己的学生，双语儿童,还有很多会,三门语言。

麻省理工公开课 - 媒体、教育、市场课程节选

And so, I have a film clip here of two very nice studies showing babies' ignorant--sorry, young children's ignorance of other people.

我给大家放两个优秀实验的电影片段,这个影片表明了幼儿对他人的无知

耶鲁公开课 - 心理学导论课程节选

So we're not having you sign the release forms Two things, one thing is personally, I have to remind myself not to use profanity 'Cause children maybe watching.

所以没有让各位签署授权协议,两点需要说明,第一,就我而言,我会尽量注意自己的言辞,因为可能会有孩子观看

耶鲁公开课 - 心理学导论课程节选