All right, so hopefully if you see any other combination of quantum numbers, for example, if it doesn't quickly come to you how many orbitals you have, you can actually try to write out all the possible orbitals and that should get you started.

所以希望你们如果遇到,任何其它的量子数组合的问题，如果你们不能马上想到有多少个轨道，可以试着先写出所有的轨道,这是个不错的切入点。

麻省理工公开课 - 化学原理课程节选

All right. So now, we've got it I've got the code up for you.

好，现在我们已经明白这一方法了,现在让我们来看看代码。

麻省理工公开课 - 计算机科学及编程导论课程节选

When you created a variable in scratch, you could either make it for this sprite only or for all sprites. All right.

当你在scratch中创建一个变量，你可以只为这个精灵创建,或者为全部的精灵而创建，好的。

哈佛公开课 - 计算机科学课程节选