Also, that blood flowing through a VSD can be heard as a holosystolic murmur at the lower left sternal border.

并且，血液流经VSD时，在左下胸骨边缘听诊就会听到全收缩期杂音。

Then, if you place a stethoscope in the left second intercostal space, at the left upper sternal border, you can hear the pulmonary valve closing.

然后，你将听诊器放到左第二肋间隙，在左胸骨上缘，你将听到肺动脉瓣关闭的声音。

As the blood flows in the reverse direction, the murmur is best heard not in the aortic area, but rather along the left sternal border.

当血液流向相反方向流动时，杂音最响部位不是在主动脉区域，而是沿着左胸骨缘。

Making our way down, between the fourth and fifth rib, next to the left lower border of the sternum, is where you can best hear the tricuspid valve closing.

让我们往下看，在第四肋及第五肋之间，紧靠左胸骨下缘，你可以清晰听到三尖瓣关闭的声音。