These are very deep lesions that go not just on the surface of your skin like a blister would, but down into the dermis or deeper layers of the skins, as well.

这些伤非常深,它们不仅像水泡那样存在于皮肤表面,还深入到真皮层或者皮下更深的地方

耶鲁公开课 - 生物医学工程探索课程节选

A lot I'm going to talk about is Modigliani-Miller but I'm not going to get too deep into it, maybe in your review sections you can get more technical.

我会重点谈论MM定理,但也不会过分深入,在复习阶段我可能会讲的更专业一些

耶鲁公开课 - 金融市场课程节选