Earth with her nether Ocean circumfused.
有






球。
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(原版) It's not 100% clear why this happened, but it might relate to changes in ocean circulation that took place when North and South America finally came together, and water could no longer circulate between the Pacific and the Atlantic.
为什么会
样发生
不是百分之百清楚,但
可能与北美和南美最终结合,太平洋和大西洋之间的水
不再循环发生的海洋环
变化有关。