That's why people are so excited about embryonic stem cells because in nature they become all the cells of the body.

这就是为什么胚胎干细胞如此让人激动,因为它的天然功能就是变成所有身体细胞

耶鲁公开课 - 生物医学工程探索课程节选

Because I've hard coded the zero, it's just capitalizing they first character.

因为我硬编码了那个零，它只是把第一个字母变成大写。

哈佛公开课 - 计算机科学课程节选