Dab tsi yog lub luag haujlwm tseem ceeb ntawm lub cev shaping khaub ncaws?
Apr 14, 2023
Teb: Lub luag haujlwm tseem ceeb ntawm lub cev shaping khaub ncaws yog kom nruj lub cev, txo qis sab nraud, txhim kho lub cev, thiab ua kom muaj kev ntseeg siab rau tus kheej.
