So, what this means is that when we're looking at an actual wave function, we're treating it as a wave, right, so waves can have both magnitude, but they can also have a direction, so they can be either positive or negative.

这意味着,当我们看一个波函数时,我们把它看做一个波，波不仅有幅值，还有方向，所以它们可正可负，如果。

麻省理工公开课 - 化学原理课程节选

The Bronx zoo is incredible, fantastic, very well-maintained, sprawling zoo with so much to see and do.

布朗克斯动物园简直是棒极了，而且维护得很不错，庞大的动物园里有许多可看、可玩的东西。

布朗克斯的景点 - SpeakingMax英语口语达人

Can you tell us about Tate Modern and what there is to see?

你能给我们讲讲泰特现代艺术馆以及那里有什么可看的吗？

美术馆很多 - SpeakingMax英语口语达人

There's a lot to see and do there.

那儿有很多可看的东西和可做的事情。

布朗克斯的景点 - SpeakingMax英语口语达人

I have some other data shown here.

我有一些其它的数据可给你们看一下

耶鲁公开课 - 金融市场课程节选