The question was: When it thunders why do we see the lighting first, then hear the thunder rolls?
这个问题是：为什么在打雷时，我们总是先看到闪电后听到雷声？
The question was: When it thunders why do we see the lighting first, then hear the thunder rolls?
问题是：打雷时为什么我们先看见闪电然后才听见雷声？
The question was: When it thunders why do we see the lighting first, then hear the thunder rolls?
问题是：打雷时为什么我们先看见闪电然后才听见雷声？
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