Pinnigrade
a. & n.用鳍(或鳍状肢)行走的(动物)
🗣️ 情景例句
I wonder whether I might ask you a question.
我是否可以问你一个问题？
Will you take that library book back for me?
你能帮我把书还回图书馆吗？
Even if two of these were flooded, she would still be able to float.
即使有两个舱进水，仍可漂浮的水面上。