Lub tshuab nqus cua uas siv los ntawm hluav taws xob siv hluav taws xob txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau tsim huab cua.
Daim ntawv thov hluav taws xob tso cua: tso pa tawm, tso pa tso pa nkev, kho dej phwj tuaj, tso pa oxygen, thiab lwm yam.