That's great for the fish population and the river otters that live here.
这对鱼及在这里生活的人们都很有帮助。
教材
So say your state has a lot of turkeys but no river otters, you find a state that has a lot of otters and needs turkeys, and you trade.
假设你的州有很多火鸡但没有水獭 你发现一个有很多水獭的州需要火鸡 然后你进行贸易。
英语百科
River otter
（重定向自River otters）
For the river in Devon, England, see River Otter
River otter refers to several species of aquatic mustelids within the genera Lutra, Lontra and Pteronura, which mainly inhabit rivers and other freshwater locations. This distinguishes them from the sea otter and marine otter which are true marine mammals.