Biconcavity
n. biconcave的变形
🗣️ 情景例句
A clip-on?
用夹上去的？
Jean was outspoken about her wish to be married.
琼毫不隐讳她意欲结婚的愿望。
Did she learn all by herself? How clever.
她全是自己学会的吗？多么聪明啊！