To prevent the destruction of the earth, NASA plans to use spacecraft to hit asteroids to gain experience
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China News Service, Jinan, March 15 (Zhao Xiao) According to news from the Shandong Provincial Department of Ecology and Environment on the 15th, as the cold air continues to move south, Shandong is expected to be affected by sand and dust that afternoon. By then, PM10 will gradually appear in Shandong from north to south. Severe pollution and above.