And if you haven't realized already, do realize per the tutorials that we've linked to online, you can do things like duplicating sprites, you don't have to re-implement the whole thing.

如果你还没有意识到这一点，再想想我们制作出来的一个个在线教程，你可以像复制这些小精灵们一样完成你整个浩瀚的工作，你没有必要一个一个重复地去制作。

哈佛公开课 - 计算机科学课程节选

You don't have to re-implement the function.

你不需要重新编译那个函数。

哈佛公开课 - 计算机科学课程节选