So, indeed, we are talking about a lot of void and a tiny little bit of extremely dense being.

事实上，更多的是许多真空,只有极小部分的高密度的物质。

麻省理工公开课 - 固态化学导论课程节选

You're going to know more details about it, they're not really colors, they're chemicals, specific chemicals - but the pattern is the same.

通过它,你可以知道更多,DNA不是真有颜色 它们只是化学物质,特殊的化学物质,不过模式是一样的

耶鲁公开课 - 生物医学工程探索课程节选