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。

youdao

As is known to all, the world is made up of small particles called atoms.

众所周知，世界是由叫做原子的小微粒组成的。

youdao

As is known to all, the world is made up of small particles called atoms.

众所周知，世界是由叫做原子的小微粒组成的。

youdao