This plate is growing on both sides, and since there is no intermediate trench, the two ridges must be moving apart.
这个板块是在两边生长的，由于没有中间的沟槽，两个脊必然是分开的。
If galaxies are moving apart now, they must therefore have been closer together in the past.
若星系现在正远离我们，那它们过去一定比现在离我们更近。
If galaxies are moving apart now, they must therefore have been closer together in the past.
若星系现在正远离我们，那它们过去一定比现在离我们更近。
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