The seal's flipper is homologous with the human arm.
海豹的鳍肢与人类的手臂同源。
An anterior appendage, such as a leg, wing, or flipper.
前肢，上肢动物前部的附肢，如前腿、前翅、前鳍等。
The collision of steel strip with flipper guide was observed on finish rolling unit.
现场观察发现了钢板撞击精轧机组侧导板现象。
What you doing down there, flipper bird?
你在下面干嘛，小小鸟？
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