grum·bling
noun/ˈɡrʌmblɪŋ/
/ˈɡrʌmblɪŋ/
- [uncountable] the act of complaining about something
咕哝；嘟囔；发牢骚 - We didn't hear any grumbling about the food.
我们没听到过对食物的抱怨。
- We didn't hear any grumbling about the food.
- grumblings[plural] protests about something that come from a number of people but that are not expressed very clearly
（集体的）隐隐的不满