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他在关于地质学的报告中, 也涉及气候问题.In his lecture on geology, he touched on the subject of climate.主修地质学的学生要选修地质学或地理课程.Concentrators in geological sciences elect either geology or geography.他主修地质学.He majors in geology....

“地质学”的拼音为：dì zhì xué...