当建立一套系统时，确定自己不会掉入这种陷阱，去思考“我应该把这些放哪儿呢？”

When you are designing your system, make sure you don’t fall into the trap of thinking “Where should I put this?”

youdao

有个问题：我可以在我的办公室里放两套沙发吗？

Question: Can I get two couches in my office?

youdao

可能最具中产阶级特点的东西就是家里的一套杯垫了；更有甚者，放一套配套的杯垫。

Perhaps the most middle class of all things to have in a house is a set of coasters. Even more middle class, however, matching coasters.

youdao

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