科研之友
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<正>在雷雨天在雷雨天,和大雨一起到来的还有闪电和雷声雷声。闪电是自然界最壮观的景象之一,但它的壮丽也是致命的……Lightning Lightning is caused by electrical charges that build up in the clouds during a thunderstorm,then erupt in a bolt of electricity that reaches between two clouds, or between the clouds andthe earth.
