The Bohai Sea is China's continental sea, while the Yellow, East China and South China seas are marginal seas of the Pacific Ocean.
渤海为中国的内海，黄海、东海和南海是太平洋的边缘海。
During the Neoproterozoic to the Early Paleozoic, the South China was a marginal basin captured by the Yangtze active continental margin, filled with very thick flysch, sandstone, and shale sediments.
华南新元古代到早古生代是扬子活动大陆边缘构造“捕获”的一个边缘海盆地，其间充填了巨厚的复理石、砂、页岩沉积。
The plate activity is weaker in the passive continental margin of the northern South China Sea, which is favorable for forming the large-scale gas field and gas hydrate reservoirs.
南海北部被动大陆边缘是板块活动相对较弱的地区，业已证实是巨大天然气田形成的有利场所，同时也是水合物发育的有利地区。
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