slide appears: "Elementary particles are the building blocks of all matter everywhere in the universe.

幻灯片出现：”基本粒子组成了宇宙里的所有物质。

youdao

slide appears: "Elementary particles are the building blocks of all matter everywhere in the universe.

幻灯片出现：”基本粒子组成了宇宙里的所有物质。

youdao