English-Chinese/The diameter of a typical galaxy is only 30,000 light-years, and the typical distance between two neighboring galaxies is only 3 million light-years

The diameter of a typical galaxy is only 30,000 light-years, and the typical distance between two neighboring galaxies is only 3 million light-years.

典型星系的直径仅为30,000光年，两个相邻星系之间的典型距离仅为300万光年.