天气预报 > 其他 > 蜻蜓为什么飞得这么低呀
蜻蜓为什么飞得这么低呀
更新时间: 2020-11-02 00:00:00  

下雨前气压低,空气湿度大,苍蝇、蚊子等小虫的翅膀沾上了水分,由于増加了重量而不能高飞。蜻蜓为了捕捉这些小虫,也会贴近地面,低飞盘旋。另外,为了防止雨点、冰雹和雷电伤害到自己,蜻蜓也会本能地在下雨前降低飞行高度,保护自己。

关键词: 蜻蜓 为什么 这么

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