Taw qhia rau Kev Sib Tham System

Lub rooj sab laj kab sib tham yog cov khoom siv hluav taws xob uas sib xyaw ua ke ntau yam haujlwm, feem ntau yog siv los txhim kho kev ua haujlwm tau zoo thiab kev sib txoos. Nws suav nrog microphone hais txog kev tswj hwm, cov neeg sawv cev tshuaj xyuas haujlwm, cov ntaub ntawv pov thawj kev ywj pheej, cov ntaub ntawv faib tawm thiab tso saib ntau cov lus txhais, thiab lwm yam.