noun 下载 🔗分享 火成说，深成说。 The old geological theory that the rocks forming the Earth were formed in fire by volcanic activity, with a continuing gradual process of weathering and erosion, then deposited on the sea bed, re-formed into layers of sedimentary rock by heat and pressure, and raised again. Examples : "The old geology textbook explained plutonism as the way volcanic activity deep within the earth formed rocks, which then eroded and reformed into layers over time. " 那本旧地质学课本解释说，深成说是指地球深处的火山活动形成岩石的方式，这些岩石随着时间的推移会受到侵蚀，然后重新形成为层层叠叠的地层。 geology theory science history 与AI对话词汇游戏阅读练习
