英英释义
Noun- unpaired median fin on the backs of fishes and some other aquatic vertebrates that help to maintain balance
例句
用作名词(n.)- The shark's fin sliced the water.鲨鱼的背鳍像刀样迅速划破水面。
- Now he speeded up as he smelled the fresher scent and his blue dorsal fin cut the water.那条鲨鱼闻到了新鲜的血腥味，正加速航行，蓝色的背鳍在水中划过。
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