How old I do not know.

VOA: special.2010.07.10

How long did it take old Chopin to think that up do you suppose? Two seconds?

老肖邦花了多长时间去构思这段曲子,你觉得呢,两秒钟吗

耶鲁公开课 - 聆听音乐课程节选

What I'd like to do today is talk to you about how it is that we moved from this old model to what it is that today many institutions call the Yale model.

今天我想讲的就是,我们如何从传统模式,转变为所谓耶鲁模式

耶鲁公开课 - 金融市场课程节选

How do the components of A in the new rotated coordinate system relate to the components of the old coordinate system?

在旋转后的新坐标系中 A 的分量,和原始坐标系中 A 的分量有什么关联呢

耶鲁公开课 - 基础物理课程节选