背せ鰭びれせびれFreq.FrequencyTop 100,000Meanings1noundorsal finRefers to the fin on the back of fish and some marine mammals.サメの背せ鰭びれが水すい面めんから出でている。The shark's dorsal fin is sticking out of the water.この魚さかなは背せびれが長ながくて美うつくしい。This fish has a long, beautiful dorsal fin.
