Lub koom haum ntawm cov me nyuam qhov chaw txhawj xeeb ntau tus niam txiv. Ib qho ntawm cov lus nug tseem ceeb tshaj plaws yog qhov chaw zoo tshaj plaws los khaws cov khoom ua si, suav nrog cov khoom siv da dej. Lub pob tawb khoom ua si puas siv tau? Yuav ua li cas xaiv qhov system cia rau cov khoom ua si hauv chav dej?. Kawg hloov kho: 2023-12-16 03:12