Pinnigrade
a. & n.用鳍(或鳍状肢)行走的(动物)
🗣️ 情景例句
You don't know what you are talking about.
你不知道你在说什么。
It is better to be a martyr than a confessor.
与其做忏悔，不如做殉道者。
I'm afraid that it's not going to work out.
我恐怕这事不会成的。