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plate tectonics造句
31. The surface, or crust , of the Earth is shaped by a process called plate tectonics. 32. Some important information about ancient plate tectonics and crustal evolution may be obtained from grey gneisses. 33. The theory of plate tectonics describes the motions of the lithosphere. 34. The cycle of geosyncline formation and orogeny can be integrated with the plate tectonics concept of opening and closing oceans in a simple and natural way. 35. And that supports the idea that plate tectonics was in motion. 36. Likewise, the modern theory of plate tectonics holds that mountains work as stabilizers for the earth. 37. Scientists have developed a theory, called plate tectonics, that explains why most earthquakes occur.