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....
“莫伊拉跟你说什么啦？”利兹突然生气地质问道。"What did Moira tell you?" Liz demanded with a flash of anger.数以亿万年计的地质史aeons of geological history不列颠群岛的地质the geology of the British Isles...