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

We keep all sorts of secrets in our company; we don't want to be filing all of our information all the time and to have it go right up on the website on standard forms so that everyone can easily process it.

我们希望保守公司的秘密,不愿意把公司信息归档,然后立刻以标准格式发布到网上,以便所有人浏览

耶鲁公开课 - 金融市场课程节选