Biocenose
[生]生物群落
??? 情景例句
My new shoes hurt my feet ...
我的新鞋弄痛了我的腳……
The first step is the only difficulty.
萬事起頭難。
When she's happy, I'm happy. When she feels unhappy, I feel the same.
她快樂時，我快樂。她不高興時，我也不高興。