Convexities
n. 凸状, 凸面( convexity的名词复数 )
🗣️ 情景例句
Help yourself, please.
请随便。
I'm stuffed.
我快撑死了！
and comforted by the thought of the help he was bringing to his friend,
想到能对朋友有所帮助，他感到欣慰，