But it is a very handy way of thinking about, not just how to program, but how to break problems down into nice sized chunks.

但是它确实是一种很方便的思考方式，不仅仅限于编程序,在将程序分解为小部分时也很有用。

麻省理工公开课 - 计算机科学及编程导论课程节选

So when you go ahead and draw these on your problem-sets or on your exams, it's a good idea to put these dashed lines in, both for you and for people reading it to see exactly where your molecular orbitals are coming from.

所以当你在做课后题,或者考试的时候要画这些图时，最好把这些虚线放进去，既方便你自己也方便别人知道,这些分子轨道是从哪里来的。

麻省理工公开课 - 化学原理课程节选