Semigroup
[计] 半群
🗣️ 情景例句
You'll learn a lot.
会增长不少见识。
The restaurant is in the basement.
那餐厅在地下室。
In the play, she must appear in a bright red dress and long black stockings.
演出时她必须穿一条鲜红色的裙子和黑色的长筒袜。