you can't imagine almost like Tsunami.
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送交者: steven 于 2009-10-30, 11:52:02:
回答: 我很土，不理解海水涨潮为什么会淹死人，很快？有多快？ 由 尼克 于 2009-10-30, 11:43:12:
If a person is dragged by the rip current, and don't know how to break it, even Michael Phelps may drown.
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