Between the second and third rib.

在第二和第三根肋骨之间。

There's no time. Here, stick this between her second and third rib. Do not go too deep. You're gonna hear a small gush of air.

没时间了，把这个从2、3肋间插进去。别太深了。你会听到很小的喷气声。

If you place a stethoscope between the second and third rib, known as the right second intercostal space, just next to the upper border of the sternum, you'll hear the aortic valve closing.

如果你将听诊器置于第二肋及第三肋之间，被称为右第二肋间隙；紧靠胸骨上缘，你将听到主动脉瓣关闭的声音。