Summer can really heat people to death, a set of pictures to understand “deadly” heat stroke

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Recently, the high temperature in southern my country has been “extremely long standby”, and the temperature in many places has exceeded 40 ℃, which is unbearably hot. As a kind of disaster weather, high temperature and heat wave are often ignored by everyone, but the death toll caused by it is much higher than that of tornadoes, floods and other disasters. As a high temperature killer, what kind of disease is heat stroke? Why is it fatal? What does it have to do with high temperatures? @chinaweather brings you a set of pictures to understand heat stroke.