Ntuj Hloov Tej huab cua tsis zoo nyob saum nruab ntug yog dab tsi ? Thiab ua mob rau peb lub cev tau li cas? Tej huab cua tsis zoo nyob saum nruab ntug yog dab tsi ? Thiab ua mob rau peb lub cev tau li cas ? (What is air pollution and how does it lead to disease in our bodies?)
Cov Kav Tos Liv Mas Les Xias tig los saib cov dej pub txoj sia yog qhov tseem ceeb, hauv lub caij txhim kho xyoo 2026.
