Respiratory difficulty may gradually increase with signs of upper airway obstruction, in other words, suprasternal and intercostal recession.

伴随着上呼吸道阻塞，呼吸困难可能会逐渐加重，胸部三凹征明显。

When you breathe in, your diaphragm contracts, pulling itself flat, and your external intercostal muscles between your ribs contract.

当你吸气时，你横膜收缩，把自己拉平，肋骨外部肋肌肉收缩。

Before I dive, I go through a whole preparation and that will include stretching of the body, stretching of the lungs, the diaphragm, intercostal muscles.

在潜前, 我会做一个完整准备活动，包括身体伸，、肌和肋肌拉抻。

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隙，在左胸骨上缘，你将听到动脉瓣关闭声音。

In addition to the diaphragm, external intercostal muscles are muscles located on the outside of our ribs, and they expand the chest.

除了横膜，肋外肌是位于肋骨外侧肌肉，它们可以扩张胸部。

Before I dive, I'll go through a whole preparation and that will include stretching of the body, stretching of the lungs, the diaphragm, intercostal muscles.

在我潜前，我会做一个完整准备工作， 包括伸身体、伸部、横膜和肋肌。

And as soon as I move on top of the ribcage and between the intercostal muscles, which is softer and harder, I can feel the difference of the stiffness.

当我在胸腔顶部和肋肌移动时，较软和较硬，我就能感觉到僵硬差异。

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，被称为右第二肋隙；紧靠胸骨上缘，你将听到主动脉瓣关闭声音。

The midclavicular line is the imaginary line that gets drawn from the midpoint of the left clavicle, or the collarbone, straight down, and you can find where it intersects with the fifth intercostal space.

锁骨中线是一条从左锁骨中位置笔直画下来假想线，你可以找到它与第五肋隙相交位置。