Bidiagraph
[计] 有向偶图
🗣️ 情景例句
Please excuse me. I'm very sorry.
请原谅我， 我真的很不好意思。
I would rather stay here.
我宁愿留在这里。
Hello, Jim! Help yourself to a cake.
你好，吉姆！请随便吃糕点。