“云集”是说很多人从各个地方来到一起，像天上的云聚在一起一样。

"云集" means many people come together from various places, like clouds gathering in the sky.

这个词多用在正式或书面的场合，常说名人云集、专家云集。

This word is often used in formal or written contexts, commonly in phrases like 名人云集 (celebrities gather) or 专家云集 (experts gather).