Ecostratigraphy
生态地层学
🗣️ 情景例句
She's winning!
她赢了！
It's a beautiful country with forests, mountains and deserts.
这个国家很美，它有很多森林、山和沙漠。
Some years ago an American psychiatrist named William Dement published experiments dealing with the recording of eye-movements during sleep.
前些年，美国一位精神病学者发表了一篇报告，报告中记录了眼球在睡眠时的活动情况。