Chronostratigraphy
年代地层学
🗣️ 情景例句
And if I think about it long enough, you never know ...
如果我一直考虑下去的话 ，说不定……
You may rest assured that the shipment will be duly delivered.
你们尽可放心，我们会按时交货的。
Ten minutes later we walked out of the shop together.
10分钟以后，我们一道走出了商店。