the big bang they 生活大爆炸
Only then can they hope to describe conditions at the Big Bang, when all space and time was compressed into a volume far smaller than a proton.
只有那样他们才能指望描述大爆炸的情况，所有的空间和时间全部在那时被压缩成一个远小于质子的体积。
You can see them fall during the day, and usually hear the big bang as they hit the ground.
在那天，你可以看到它们落下，通常情况下也能听到它们撞击大地后发出的巨大爆炸声。
They suggested that all particles had no mass just after the Big Bang.
他们提出大爆炸最初所有的粒子都没有质量。
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