Semigroup
[计] 半群
🗣️ 情景例句
I'm sure everything is fine.
我确信一切都很好。
Deeds are fruits; words are but leaves.
行动是果实，言语只是树叶而已。
Don't be so sure.We might not go anywhere.
别那么肯定。我们可能哪里也去不成。