Grumbling
a. 出怨言的；喃喃鸣不平的
✅ 同义词
🔴 反义词
🗣️ 情景例句
I'm concerned.
我很担心。
John's parents will rejoice at his safe return.
约翰的双亲会因他的安然归来而惊喜万分。
It's very kind of you to call.
谢谢你来告诉我。