By Health Concept Editorial2021-03-31 05:30

【沙塵滾滾】北京遇嚴重沙塵暴 民眾:口鼻眼全是沙

By Health Concept Editorial2021-03-15 03:47

北京今早(15日)遇上今年以來最大、強度最強的沙塵暴,當地PM10濃度飆升,而PM2.5水平更超出世衞標準11倍。