The difference accounts for the existence of continents and ocean basins. 这种差别解释了大陆和海洋盆地存在的原因。
Plate tectonics, the geologic process responsible for creating the Earth's continents, mountain ranges, and ocean basins, may be an on-again, off-again affair. 板块构造运动，这个一直被认为是创造地球大陆，山脉和海洋盆地的地质过程，很可能是一种分分合合的特殊事件。
