Biconcavity
n. biconcave的变形
🗣️ 情景例句
When are you planning to get married?
你准备什么时候结婚？
Marriage is a lottery.
婚姻是一件难于预料的事。
'I was just wondering how to spend the morning -- until I saw you.
“我正不知道怎么消磨这一上午呢，正好见到好。