Expounder
n. 解释者
✅ 同义词
🗣️ 情景例句
Is there any discount on bulk purchases?
我多买些能打折吗？
He devoted himself completely to his work.
他完全投身于工作。
They had a good time, but I didn't go.
他们玩得很痛快，但我没有去。