​Buffer introduction

Kev taw qhia tsis pub

Buffer yog cov khoom sib xyaw ua ke uas tuaj yeem siv los tswj fugacity ntawm cov pa roj lossis kua hauv qhov kub thiab txias, lossis nyob rau hauv qhov kub thiab txias. Nws tuaj yeem ua kua lossis kua.