Another good thing to do when you're really stuck is walk away. Take a break. Come back and look at it with fresh eyes of your own.

当你卡住的时候另外一件有益的事,就是走开休息一会儿,再回来看代码的时候你的眼睛就清醒多了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Again, pset one will walk you through this and you'll get familiar with this stuff, even though it looks a little arcane at first glance.

此外，习题集1将带你通过这个,你将熟悉这些东西，即使第一眼它看起来是比较晦涩的。

哈佛公开课 - 计算机科学课程节选