Moreover, the rate of expansion of the universe would automatically become very close to the critical rate determined by the energy density of the universe.

而且，宇宙的膨胀率会自动变得非常接近宇宙能量密度决定的临界率。

The initial rate of expansion also would have had to be chosen very precisely for the rate of expansion still to be so close to the critical rate needed to avoid recollapse.

初始膨胀率也必须非常精确地选择，因为膨胀率仍然非常接近避免重新坍缩所需的临界率。