Khoankerng-oexsefng
Khoankexng-oexsefng (環境衛生 ; sanitation ), -uixsefng, si tihoong laang kab huiekhix-but zøxseeng ee guihai ciapchiog ee oexsefng (hygiene) sietsy, kisut, hegciar zhørsy. Zhanchviu tochi laixtøea ee zuytø kab siw lahsab ee tan'ui.
Khoankexng-oexsefng (環境衛生 ; sanitation ), -uixsefng, si tihoong laang kab huiekhix-but zøxseeng ee guihai ciapchiog ee oexsefng (hygiene) sietsy, kisut, hegciar zhørsy. Zhanchviu tochi laixtøea ee zuytø kab siw lahsab ee tan'ui.