Potamobenthos
河流的底栖有机体
🗣️ 情景例句
Genetics is a whold new industry with huge market potential.
基因是一门新兴产业且拥有巨大的潜在市场。
One of these days,I'd like to take a vacation.
某天,我想度假。
It's about20,000 kilometres.
大约有20，000公里。