Biostratigraphy
生物地层学
🗣️ 情景例句
Oh. Your offer sounds interesting.
哦，您所给的优惠听起来蛮吸引人的。
Skiing is such a difficult sport that it's more work than play.
滑雪是非常困难的运动，真所谓工作高于游戏呀。
How are you?
你好吗？