swelling rate的用法和樣例：
例句
- For a void to mimic it exactly, the expansion rate must decrease sharply away from us and in every direction.
要使空洞與暗能量精確相似，膨脹速率必須在離我們遠去的任何方向上急劇減少。 - We then insert this average density into Einstein's equations for gravity and determine the averaged expansion rate of the universe.
然後將平均密度帶入按因斯坦重力方程來確定宇宙的平均膨脹速率。
