n.超大陆(存在于几百万年之前，如冈瓦纳古陆或劳亚古陆)

The supercontinent Pangaea began to break apart about 250 million years ago.
超大陆盘古大陆在大约2.5亿年前开始分裂。
The formation of the next supercontinent is predicted to occur in 250-500 million years.
下一个超大陆的形成预计将在2.5亿至5亿年之间发生。
During the Precambrian era, Earth had several supercontinents, including Rodinia and Nuna.
元古代时期，地球曾有过包括罗迪尼亚和努纳在内的几个超大陆。
The assembly of the supercontinent Gondwana was a significant geological event in the southern hemisphere.
超大陆冈瓦那的聚合是南半球地质历史上的一件重大事件。
If all current continents were to drift back together, they would form another supercontinent called Amasia.
如果所有现存的大陆再次汇聚在一起，它们将构成一个新的超大陆——阿玛西亚。
Supercontinents cycle through the history of our planet, with each breakup leading to the creation of new oceans.
在地球的历史中，超大陆经历了循环演变，每一次破裂都会导致新的海洋形成。
The supercontinent Laurasia eventually split into what we now know as North America, Europe, and Asia.
超大陆劳亚大陆最终分裂成了我们今天所熟知的北美洲、欧洲和亚洲。
Continental drift theory posits that supercontinents repeatedly form and break apart over hundreds of millions of years.
大陆漂移理论认为，在数亿年的时间里，超大陆会反复地形成并分裂。
As the supercontinent Pannotia broke up, it led to the opening of the Atlantic Ocean around 600 million years ago.
当超大陆潘诺提亚破裂时，大约在6亿年前导致了大西洋的形成。
Paleomagnetic data suggests that the supercontinent Columbia existed between 1.8 billion and 1 billion years ago.
古地磁数据表明，超大陆哥伦比亚存在于约18亿年至10亿年前。