In a thunderstorm you see the lightning first and then hear the thunder. This is because light travels very much faster than sound.

打雷时你先看到闪电，然后再听到雷声，这是因为光传播速度要比声音快。

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There was a loud noise outside the classroom. The physics teacher had to raise his voice: "Light travels much faster than sound."

教室一片嘈杂声，物理老师只得提高了声音说：“光的传播速度比声音快得多。”

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There was a loud noise outside the classroom. The physics teacher had to raise his voice :"Light travels much faster than sound ."

教室外一片嘈杂声，物理老师只得提高声音说：“光的传播速度比声音快得多。”

youdao

There was a loud noise outside the classroom. The physics teacher had to raise his voice :"Light travels much faster than sound ."

教室外一片嘈杂声，物理老师只得提高声音说：“光的传播速度比声音快得多。”

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