Cov ntaub ntawv ntawm cov rooj tog zaum nraum zoov tuaj yeem muab faib ua: ntoo, rattan, hlau, yas, yas ntoo, thiab lwm yam. Cov rooj tog zaum sab nraum zoov ntawm cov ntaub ntawv sib txawv muaj qhov zoo thiab qhov tsis zoo.Thaum kev yuav khoom, koj tuaj yeem siv qhov xwm txheej raws li kev siv, thiab thaum kawg txiav txim siab yam koj xav tau raws li y ...
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