Stratigraphic
a. 地层学的
🗣️ 情景例句
He met his girfriend throught a public chat room.
他是在一个公共聊天室里认识他女友的。
Who serves everybody gets thanks from nobody.
人人都侍候，个个不见好。
will move decisively from the second phase to the third,
就可以明确地从第2阶段进入第3阶段。