https://padlet.com/ccawtm5y8q/7c1apexhdxk0y34g 四上1冊第二課 en-us 2021-11-11 13:53:38 UTC 2025-11-13 22:47:06 UTC hello@padlet.com https://padlet.net/icons/png/1f30f.png https://padlet.com/ccawtm5y8q/7c1apexhdxk0y34g/wish/1884215292 海嘯]]> 2021-11-11 13:53:38 UTC https://padlet.com/ccawtm5y8q/7c1apexhdxk0y34g/wish/1884215292 https://padlet.com/ccawtm5y8q/7c1apexhdxk0y34g/wish/1884215295 2021-11-11 13:53:38 UTC https://padlet.com/ccawtm5y8q/7c1apexhdxk0y34g/wish/1884215295 https://padlet.com/ccawtm5y8q/7c1apexhdxk0y34g/wish/1884215298 海 嘯傳至岸邊捲起的浪高，兩米以下就稱為一級海嘯; 十米則為三級，破壞 力更大。在過去的紀錄中，傷亡最多的海嘯是發生於1883年的印尼，當時的海嘯威力達到最高的四級，波浪高三十米，死亡人數達三萬六千人！海嘯造成的傷害與人口密集程度、警報系統和衛生條件等也有直接的關 聯。災後的衛生問題可能導致傳染病的發生，也會再度造成重大傷亡。  

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影片👇🏻
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火山爆發影片👇🏻
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