Tsis yog, cov ntaub so menyuam mos tsis pom zoo siv rau ntawm qhov chaw mos. Cov ntaub so yuav cuam tshuam qhov sib npaug ntawm qhov chaw mos, uas tuaj yeem ua rau khaus thiab lwm yam kab mob. Hloov chaw, nws yog qhov zoo tshaj plaws los ntxuav thaj chaw nrog dej sov thiab xab npum me me, tsis muaj ntxhiab tsw.
