Delphinidae
海豚科
🗣️ 情景例句
Good morning, Mr. Tao.
早上好，陶先生。
He's tired because he worked hard all day today.
他疲倦是因为他今天整天努力工作。
I don't know. I think he's very old.
不知道。我想他年纪一定很大了。