Do you see how we got that? OK, let me do it again.

了解是怎么做了的吗？，好的，我们再来一次。

youdao

But let me just tell you immediately to the side, which side it's pointing to it's always pointing towards higher values of a function OK, and we'll see in that maybe about half an hour.

现在我可以告诉你，它总是，指向更大的函数值的方向，可能半个小时后就会知道为何了。

youdao

Snake: OK. There's a lake near here. Let me see. Can you swim?

蛇：好的。这附近有一个湖。让我想想。你会游泳吗?。

youdao