Semigroup
[计] 半群
🗣️ 情景例句
Richard and Marilyn bought it for me for my birthday.
这是Richard和Marilyn送给我的生日礼物。
He who wills success is half way to it.
下定决心成功的人是成功了一半。
Though they may atttain considerable accuracy in the perception of flat form,
虽然他们对平面形的感觉能达到相当准确的程度，