Nurse sharks even nap on the seafloor; however, they use a form of ram ventilation in which they draw in water through nostril-like structures near the eyes, called spiracles, and force it out through the gills.

铰口鲨甚至底打盹；不，它们采用是一种特殊撞击呼吸，即通眼睛附近鼻孔状结构（称为鳃裂）吸，然后用鳃将排出。

You would almost think a great gun had been discharged; and if you noticed the light wreath of vapor from the spiracle at his other extremity, you would think that that was the smoke from the touch-hole.

你几乎以为是一门巨炮发射；如果你还注意到它另一端孔中冒出来一圈圈淡淡雾气，你以为那是大炮火门里冒出来烟。

The siphon connects directly to the spiracles and, when kept out of water, allows the creature to breathe.

细管直接连着呼吸孔探出外时这种生物就能呼吸了。

It is certain that the mouth indirectly communicates with the spouting canal; but it cannot be proved that this is for the purpose of discharging water through the spiracle.

可以肯定，它嘴巴间接地与管道相通；但是，无法证明这种结构目是为了通孔排。

This reserve of tiny air bubbles is kept at the tip of its abdomen right where the spiracles are.

它把这个小气泡保存腹部末端那里正好有呼吸孔。

Most cockroaches, though, do they breathe through spiracles on the side of their body?

不大多数蟑螂是通身体侧面气孔呼吸吗？

If it did breathe  through open spiracles, these would be a weak point in the exoskeleton, where material inside  could burst out from the pressure difference.

如果异形确实通开放气孔呼吸，这些气孔将成为其外骨骼薄弱点，内部物质可能因压力差而从中出。

Oxygen enters these spiracles and diffuses directly into the tracheal system, delivering  oxygen to cells and tissues, bypassing the need for a circulatory system to transport oxygen.

氧气通这些气门进入， 并直接扩散到气管系统，为细胞和组织提供氧气，从而无需循环系统来运输氧气。

They will expand and contract their abdomen to bring air in and out of their abdominal spiracles, which are little holes at the sides of their bodies.

它们通扩张和收缩腹部，将空气吸入和呼出腹部气门，这些气门是身体两侧小孔。

Insects breathe through a network of tiny tubes called tracheae, which extend  throughout their bodies and open to the outside world through small holes called spiracles.

昆虫通一套称为气管微小管道网络进行呼吸，这些气管遍布其全身，并通名为气门微孔与外界相连。