Cov tub rau khoom swb tuaj yeem siv ntau txoj hauv kev. Los ntawm ob peb xees mus rau ntau tshaj ib puas duas las, koj tuaj yeem nrhiav tau ib lub tub rau khoom swb uas haum rau koj cov kev xav tau. Ntawm no, peb rhuav tshem lub peev xwm thauj khoom, tus nqi thiab kev siv ntau yam