某些与银河星云相似但不发光的天体，有时看来象块黑色补丁，遮住了周围的星光。

Some celestial bodies similar to galactic nebulas but without any luminosity sometimes reveal their presence as dark patches obscuring the light of stars beyond them.

数亿的星星构成你们的银河星云，它们都与相互相隔云云广漠的距离，更远的类似于乳白的色彩的云。

Hundreds of millions of stars constitute your Milky Way nebula, all at such vast distances from each other that the farther ones resemble milky clouds.

某些与银河星云相似但不发光的天体，有时看来象块黑色补丁，遮住了周围的星光。

Nebulas but without any luminosity sometimes reveal their presence as dark patches obscuring the light of stars beyond them.