fin
fin
/ fin /
◙ noun
1. a flattened appendage on various parts of the body of many aquatic vertebrates, including fish and cetaceans, and some invertebrates, used for propelling, steering, and balancing
• 鳍;鳍状物
an underwater swimmer's flipper
• (潜水者的)脚蹼
a small flattened projecting surface or attachment on an aircraft, rocket, or motor car, for providing aerodynamic stability
• (飞机、火箭、机动车的)尾翼;鳍状稳定板
a flattened projection on a device, used for increasing heat transfer
• 散热片
◙ (finned, finning)
1. [no obj., with adverbial of direction] swim under water by means of flippers
• (穿着脚蹼)在水下游泳
»I finned madly for the surface.
我拼命划动脚蹼想要浮出水面。
♦ finned adjective
»[in combination] primitive ray-finned fishes.
长着射线状鳍的原始鱼类。
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