Pinnigrade
a. & n.用鳍(或鳍状肢)行走的(动物)
🗣️ 情景例句
Goodbye, come again soon.
再见，下次再来。
Do you have any brothers or sisters?
你有兄弟或姐妹吗？
But it's great! We're together most of the time.
但是好极了！大多数时间我们在一起。