Conveyor deb
Txojkev tsim tau ntaus thawj, thiab tej dabtsi uas siv rau tej teeb meeb, lossis nrhiav nrhiav, nrhiav nrhiav, Qhia nrhiav, phau taws, hydropower, incineering teev thawm loj, tej tej tswb, nrhiav nrhiav, tswb, tswb Tsis tas li ntawd xwb. Yog peb ua li ntawd, peb yuav txiav txim rau peb. Cia peb coj li cas? Peb siv nrhiav kom lawv nrhiav kev nrhiav kev zoo rau lawv.
Saib ntxiv