ntsiav tshuaj
Koj tuaj yeem pom txhua yam nthuav dav txog cov ncauj lus ntawm cov ntsiav tshuaj hauv cov npe hauv qab no. Cov kab lus no muaj feem xyuam nrog lub ncauj lus ntsiav tshuaj uas koj tau tshawb nrhiav. Ntawm no koj yuav pom cov lus tseeb thiab nthuav tshaj plaws txog cov ntsiav tshuaj.
