Stratigraphic
a. 地层学的
🗣️ 情景例句
Richard, did you go to the Davis Aerobics class today? Richard
你去上Davis有氧运动健身课了吗？
The secret of success is constancy of purpose.
成功的秘诀是目标坚定。
Thank you very much. I'll return it as soon as I can.
非常感谢。我会尽快归还的。