If you just look back when they were created it's most likely to be in the 1930s.

如果你回想起,你会发现那些衍生品,大多都是上个世纪30年代出现的。

耶鲁公开课 - 金融市场课程节选

You'd be less likely to say "You look tired." or "You look bored." or "You look strange."

但你可能并不会说，“你看起来累极了。”，或者“你看起来很无聊。”，或“你看起来很奇怪。”

You look 课堂 - SpeakingMax英语口语达人

So what we're going to look at is the expected payoff of Up versus, let me call it a : a being equally likely that my opponent chooses Left and Right.

所以接下来我们看看在我认为对手,选择左右的可能性相同下的预期收益,我们把它称为

耶鲁公开课 - 博弈论课程节选