Now as I noted earlier, there's a difference between the two existing texts of Milton's Comus.

正如我之前提到的,弥尔顿《科玛斯》的现存两个版本间有差异。

耶鲁公开课 - 弥尔顿课程节选

And there are two different scales of ionic character.

这里有两个版本的离子百分数。

麻省理工公开课 - 固态化学导论课程节选

scratch Scratch is a program that you can download for free cs50 net and you will see in problem set 0 0 which will be posted on CS50.nettonight under problem sets in both standard and hacker editions, can you do the--can you--it will walk you through the process of getting this software.

你可以免费下载,今天晚上我会在0,放上习套题,这个习题集有两个版本，习题集可以指导你,如何下载这个软件。

哈佛公开课 - 计算机科学课程节选