Without this muscular action, inhaling is like sucking air out of a balloon—the narrow passages tend to collapse.

如果没有这种肌肉运动，吸气就像从气球里吸出空气一样——狭窄的通道往往会坍塌。

youdao

This week, amniotic fluid is helping the air sacs in your baby's lungs get ready for breathing as she practices inhaling and exhaling.

这周，当婴儿羊水会帮助肺部的肺泡为慢慢的呼吸做好准备。

youdao

This week amniotic fluid is helping the air sacs in your baby's lungs get ready for breathing as she practices inhaling and exhaling.

这周，当婴儿羊水会帮助肺部的肺泡为慢慢的呼吸做好准备。

youdao

Patrons go below ground to play cards, sleep, exercise and work on laptops--all the while inhaling air that can have 1, 700 picocuries of radon per liter (about 1, 300 times as much as air in the average home).

FORBES: Magazine Article

Experiments by Andrew Gallup at Princeton University, his father Gordon Gallup and a colleague found that yawning is suppressed by a cool pack strapped to the forehead or by summer temperatures that are higher then body temperature, and that therefore the purpose of yawning may be to cool the brain by inhaling air.

WSJ: Matt Ridley on Why You Just Yawned | Mind & Matter

Earlier this month, a 12-year-old San Bernardino County girl, Kristal Salcido, died after inhaling Freon from an air conditioner.

NPR: Feds Raid 17 Calif. Businesses For Nitrous Oxide