And in this case we have three choices here in terms of what's going to be in the middle, so we need to decide that first.

而这种情况下对于哪个原子,在中间我们有三种选择，这是我们首先要确定的。

麻省理工公开课 - 化学原理课程节选

We don't have requirements. We don't have to take math, that's the reason I applied to Brown,

我们没有什么硬性要求。我们不用上数学课，这是我选择布朗大学的原因，

布朗的学生们 - SpeakingMax英语口语达人

But in theory, in principle, this is what we're wondering about when we face choices.

但在理论上，在原则上，这是我们面对选择时会考虑的情况。

耶鲁公开课 - 死亡课程节选

Just check, that exactly corresponds to the easy and hard thing we just had before.

验证一下,这和我们之前,选择平坦之途还是崎岖之途是对应的

耶鲁公开课 - 博弈论课程节选