Betti number
[计] 贝蒂数
🧩 词语组成解析
[计] 贝蒂
🗣️ 情景例句
He is in conference right now.
他现在在开会。
We are not born for ourselves.
人生非为己。
Don't ask me, sir. I only laid the table.
别问我，先生。我只是摆桌子。