我举起手中的香槟，心想，晚知道总比永远不知道好。

Better late than never, I thought, as I raised my flute of bubbly.

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我举起手模仿在显示屏上看到的图像做了个旋转的动作。

My hand made swirling motions, mimicking the action on the monitors.

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我举起手臂。

I am raising my arms.

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It's not infrequent that i'll get one or even two people raising their hand that they took Economics 252 from me.

有的时候会有一两个人,举起手说,他们上过我的经济学252号课

耶鲁公开课 - 金融市场课程节选

And, believe it or not, I have students walk in and first thing a hand goes up and says do you have a pen? I cannot believe it.

不管信不信，我有些学生走进来，第一件事就举起手问,你有没有笔，难以置信。

麻省理工公开课 - 固态化学导论课程节选

So I want to welcome you, I really want to invite you, whenever you've got some reactions to the things that I'm saying, raise your hand, I'll call on you.

所以我欢迎你，我真的邀请你，无论什么时候,你对我所说的有回应，举起你的手，我会叫你的。

耶鲁公开课 - 死亡课程节选