Ecostratigraphy
生态地层学
🗣️ 情景例句
Ah! That's what's got you thinking, isn't it?
噢， 就是那通电话使你开始思量起来的，是吗？
If he doesn't help him, I will.
如果他不，我将帮助他。
At nineteen minutes past eight.
8点19分。