Everybody begins to move around, and your task is to keep track of who had a coat at the beginning and who didn't. So I'm just going to show you an example where there is only one sad kid. It's easy because you can actually track it with your eyes. You can track, you can track, and then when it stops, and there is a question mark, and I ask you, did this kid have a coat or not?
这些孩子开始到处移动，而你们的任务 就是记住谁一开始 有外套，谁没有。现在的这个例子里面 只有一个哭脸。这很简单因为你可以 用眼睛追踪着它。你看着它， 看着它，然后它停住了，上面有一个问号。 我的问题是，这个孩子有外套吗？