So stars can be born in profusion when a shockwave passes through rich, fertile clouds—but not when it passes through emptier space.
因此,当沖击波穿越浓重密集的云团时,星星就可能大量诞生,但如果沖击波穿越的是较空洞的空间,星星就不可能诞生。
The flakes fell in profusion upon the ugly brown plain until at last there was only a vast white expanse like a cloud beneath our wheels.
雪不停地下着,盖满那难看的褐色平原,最后只见白茫茫的一片,我们的车轮像是在白云上面奔驰似的。
There were books in profusion and magazines and newspapers.
有大量的书籍,杂志和报纸。