对于造成海洋盆地形成的机制，至今还没有给出非常令人满意的解释。
No very satisfactory account of the mechanism that caused the formation of the ocean basins has yet been given.
地质记录显示，在白垩纪末期这些航道从大陆撤退，回到主要的海洋盆地。
At the end of the Cretaceous, the geological record shows that these seaways retreated from the continents back into the major ocean basins.
在海洋退回到主要的海洋盆地之前，每日天气和季节性气候发生了剧烈的变化。
Extreme changes in daily and seasonal climates preceded the retreat of the seas back into the major ocean basins.
海洋盆地形成和进化是由什么控制的？
What are the processes that control the formation and evolution of ocean basins?
在白垩纪后期，地质资料表明这些浅海都从大陆退回到主要的海洋盆地内了，没有人明白为什么。
At the end of the Cretaceous, the geological record shows that these seaways retreated from the continents back into the major ocean basins. No one knows why.
板块运动理论的一个关键点就是在地质历史的尺度内，海洋盆地的开合是因为板块转换，具有转换特征。
A key aspect of plate tectonic theory is that on geologic time scales ocean basins are transient features, opening and closing as plates shift.
研究人员的模型显示，这一结果导致大量不断释放的甲烷随流而下，使得尤其是在循环不畅的海洋盆地，水中氧气损失可能会高达95%。
As a result, the researchers' model suggests, the waters down-current of a large methane plume, especially in an ocean basin with poor circulation, could lose as much as 95 percent of their oxygen.
研究人员的模型显示，这一结果导致大量不断释放的甲烷随流而下，使得尤其是在循环不畅的海洋盆地，水中氧气损失可能会高达95%。
As a result, the researchers' model suggests, the waters down-current of a large methane plume, especially in an ocean basin with poor circulation, could lose as much as 95 percent of their oxygen.
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