Cov neeg hais lus puas hloov hluav taws xob ua suab?

Cov neeg hais lus ua haujlwm los ntawm kev hloov hluav taws xob hluav taws xob mus rau hauv lub zog siv hluav taws xob (kev txav chaw). Lub tshuab hluav taws xob compresses cua thiab hloov cov lus tsa suab mus rau lub zog suab lossis suab siab (SPL).