这其实是人的气管。而这些彩色水珠实际上是微生物，它们现在就在这房间里，就在我们周围。

It's actually a person's trachea, and those colored globs are microbes that are actually swimming around in this room right now, all around us.

youdao

这其实是人的气管。而这些彩色水珠实际上是微生物，它们现在就在这房间里，就在我们周围。

It's actually a person's trachea, and those colored globs are microbes that are actually swimming around in this room right now, all around us.

youdao