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Seven smiling men in a modern science lab with complex equipment, a whiteboard with diagrams, and a large screen displaying Chinese text.

Seven smiling men in a modern science lab with complex equipment, a whiteboard with diagrams, and a large screen displaying Chinese text.

你有没有听过一个特别离谱的说法： “鸭子的叫声，是世界上唯一没有回音的声音。” 甚至以前还有人说：连科学家都解释不了。但其实…… 这根本就是假的。鸭子的叫声当然有回音。因为只要是声音，碰到墙壁、山体、空气，都会反射。鸭子也不例外。那为什么很多人会觉得：鸭叫“没有回音”？因为鸭子的声音特别短促，而且频率很杂。回音会和原本的“嘎嘎声”混在一起，人耳很难分辨。后来甚至还有节目专门做实验。结果发现：鸭子的声音，不仅有回音，而且和别的动物没什么区别。所以： “鸭子没有回音” 其实只是一个流传很多年的都市传说。 Mehr sehen

#science #laboratory #people

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