Ecosystems
n. <生>生态系统( ecosystem的复数形式 )
🗣️ 情景例句
In those days, when they made quilts.
那个时代 ，人们做被罩时，
You are still thinking about a Ph.D., aren't you?
你还是想学成博士，是吗？
Men accustomed to struggling for survival against the elements and Indians were bewildered by politicians, bankers and businessmen, and unhorsed by fences, laws and alien taboos.
习惯与大自然和印第安人作斗争以求生存的拓荒者被政客、银行家和商人搞得晕头转向，最后被圈地、尖律我外来的清规戒律所击败。