grumble
v. /ˈɡrʌmbl/ C1
发牢骚；抱怨
To complain about something in an annoyed or quiet voice.
仙境例句
The large birds grumbled that their comfits were too small to taste.
大鸟们抱怨说，糖果太小了，根本尝不出味道。
原著这一句
“Yes, but some crumbs must have got in as well,” the Hatter grumbled: “you shouldn’t have put it in with the bread-knife.”
“是啊，可肯定掉进面包屑了，”帽匠抱怨说，“你真不该用切面包的刀去抹黄油。”
卡罗尔原著 · 第 7 章