fin arm 中文意思是什麼
fin arm
解釋
垂直尾翼力臂-
A part or an organ, such as an arm, a leg, a tail, or a fin, that is joined to the axis or trunk of a body
附器,附肢與身體的軸或軀干相連的部位或器官,如胳膊、腿、尾或鰭
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