Macrostratigraphy
宏观地层学
🗣️ 情景例句
Helped him?
帮助他？
Happy is he who knows his follies in his youth.
记得青年时所做的愚笨事的人是幸福的。
The pictures it sent us were very disappointing because its main mirror was faulty!
它传送给我们的图像很令人失望，因为它的主要镜子有误差。