Harmonics
n. 乐音学
✅ 同义词
🔴 反义词
🗣️ 情景例句
When did the Roman Empire come into being?
罗马帝国是什么时候形成的？
Well, when exactly?
哦，具体什么时候？
I don't doubt that he will help me.
我不怀疑他会援助我。