背鳍 bèiqí dorsal fin Definitions Defs Origin Strokes Stroke Words Sentences Sents 1 sentence 鲨鱼露出了水面上的背鳍。 shāyú lùchū le shuǐmiàn shàng de bèi qí. The shark revealed its dorsal fin above the surface of the water. Source: Dong Chinese Dictionary