diaphragm
n. 隔膜;快门,[摄] 光圈;横隔膜;隔板
例句
The diaphragm vibrates, thus setting the air around it in motion.
膜片振动, 这使得周围的空气也动荡起来。
《新英汉大辞典》
In addition, breathing during REM depends much more on the action of the diaphragm and much less on rib cage action.
另外,快速眼动期的呼吸活动更多地取决于横膈膜的反应活动,而胸腔的作用要小得多。