螯里藏着太阳的虾
A small ocean shrimp snaps its claw so fast that it creates a flash of heat nearly as hot as the surface of the sun.
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Before you read
3 questions at the end. Read or listen first, then see how much you understood.
Quiz ↓这种虾远比看起来危险。把这个故事分享给那个总是小看小东西的人。在温暖的浅海里,生活着一种体长仅有一根手指大小的虾,它有一只格外硕大的螯,随时像上了膛的弹簧一样蓄势待发。
当这只虾猛地合上螯的瞬间,速度快到不只是击中目标那么简单:它会在水中制造出一个气泡,这个气泡几乎瞬间崩溃,而在崩溃的那一刹那,气泡内部的温度会接近太阳表面的温度。仅仅是这声响,就比枪声还要响亮,足以震晕甚至震死附近的小鱼。
虾本身并不会因此发热,高温和声响都来自那个气泡,而气泡消失得太快,根本来不及被感知到。在珊瑚礁附近作业的潜水员,往往先听到这种啪的一声,才看到一只虾的身影。
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The questions are in Mandarin.
What is special about the shrimp's claw?
What happens when the shrimp snaps its claw?
Why do divers hear a sound before seeing the shrimp?
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