释义 |
dorsal fin noun[ C ] biology specializeduk /ˈdɔː.səl ˌfɪn/ us /ˈdɔːr.səl ˌfɪn/ a fin (= thin part) sticking out of the back of a fish that helps balance and movement: These fish are distinctive because of their triangular dorsal fins. The dorsal fin of the male can be as much as six feet high. The team attached a tag or transmitter to the shark's dorsal fin in order to track its movements. She can identify each of the dolphins by their uniquely shaped dorsal fins. Sunfishes can be mistaken for sharks because of their large dorsal fin. SMART Vocabulary: related words and phrases Miscellaneous animal body parts back end blowhole bobtail caudate claw dorsally finny gill hindquarters nipple pincer pouch pseudopod reticulum scut speculum sting stinger teat udder |