gill cover [鱼] 鳃盖 ; 鳃被
ancillary gill-cover 辅助鳃盖
hyoidean gill-cover 舌鳃盖
Rainbows also have a red or pink streak that runs from the gill cover to the caudal fin, inspiring their name.
虹鳟体侧有从腮盖到尾鳍的红色或粉红条带，正如它们的名字。
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