dorsal fin

• n. [动物]背鳍

英英释义

Noun:

1. 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.)

1. The shark's fin sliced the water.
   鲨鱼的背鳍像刀样迅速划破水面。
2. 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。