The asteroids are a substantial amount of real estate, but not very large. And it's not very promising for life, since most of it consists of rock and metal, mostly rock.
这些小行星占据了相当一部分的宇宙空间 尽管总量不算很大 并且那里不适宜生命的发展 因为那里大多数是石头和金属，大多数是石头