Cov tsiaj qus tuaj yeem ntes tau hauv lub vas thiab tuag vim qhov tshwm sim. Cov laj kab ib ntus uas tsis siv hluav taws xob kuj tau yooj yim puas los ntawm cov tshuab lossis cov khoom muag.
Yog li ntawd, kev siv cov laj kab hluav taws xob kom raug yog qhov tseem ceeb heev.
