库切纳表示，当易碎的尘埃颗粒相互碰撞时会彼此湮灭。

When the fragile dust grains collide, they can annihilate each other, he said.

youdao

库切纳表示，当易碎的尘埃颗粒相互碰撞时会彼此湮灭。

When the fragile dust grains collide, they can annihilate each other, he said.

youdao