Gallerid
多层洞穴
🗣️ 情景例句
He is now involved in stocks.
他现在热衷于股票。
Do you have some post cards?
你有明信片吗？
Thus one simple fact, a change in the number of bison, had an effect on the whole wildlife chain of the plains.
因此，出现了这样一个简单的事实--野牛数目换的变化对平原的整个野生生物链都产生了影响。