branchial duct

例句：

1. 1.The fish has a branchial duct that connects to the gills.
   这条鱼有一个连接鳃的鳃管。
2. 2.The scientist discovered a new species of fish with a unique branchial duct structure.
   这位科学家发现了一种具有独特鳃管结构的新鱼类。
3. 3.The branchial duct is responsible for filtering the water and removing waste from the fish's body.
   鳃管负责过滤水中的杂质并从鱼体内移除废物。