进入3月，强对流天气趋于活跃，3日傍晚到夜间将出现今年首场强对流过程，需提前做好各项防御工作。 强对流天气（severe convective ...

BEIJING, Feb. 24 (Xinhua) -- China aims to basically eliminate severe air pollution by 2025, the final year of the 14th Five-Year Plan (2021-2025), Li Tianwei, an official with the Ministry of Ecology ...