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地球的北纬30°是一个引人注目的地带。尽管经纬度的划分是人类为了认识地球所为,但沿着北纬30°这一地带,确实发生过许多难以解释的现象。中国的长江、
30 degrees north latitude of the earth is a striking strip. Although the division of latitude and longitude is a matter of humankind's understanding of the Earth, there are indeed many unexplainable phenomena along the 30 ° north-latitude belt. China's Yangtze River,