There was a sudden bright light.
突然闪过一阵亮光。
A light appeared, then two men on the stairs, them a sudden bright flash, and a loud bang.
一盏灯亮起来，两个男人出现在楼梯上，接着是一道闪光和砰的一响。
A large meteorite collision, however, would probably create a sudden bright flash of light, and no extant historical records of the time mention such a flash.
然而，大型小行星的撞击可能产生突然的强闪光，而现存的那时的历史记录中没有提到过这样的闪光。
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