请问They are the largest objects:a strip of cosmic cloud some 15 billion form earth.

问题描述:

请问They are the largest objects:a strip of cosmic cloud some 15 billion form earth.
请问这里的some之前是不是省略了什么?
some这里是大约的意思,是形容词.

some 15 billion form earth 这部分是定语成分修饰前面的cloud,some=about,是副词.
There is a small village 15 miles south of the town.
这个镇以南15英里处有一个小村庄.