1·Nothing pleased him. He was always grumbling.
没有什么能使他满意，他总是发牢骚。
—— 《新英汉大辞典》
2·"If you have no subordinates who would listen to your grumbling in the office or no children who would talk with you, Pekoppa will be by your side, gently nodding," she said.
“如果你没有下属在办公室里听你发牢骚，或是没有孩子与你谈心，Pekoppa会陪在你身边，温柔地点头示意。”她说。
3·Many in Beijing are grumbling about intrusive security, with complaints appearing on websites, despite the suppression by Internet censors of discussion deemed critical of the games.
许多北京市民对扰人的安保措施发牢骚。尽管网管部门压制那些被视为批评奥运的讨论，各网站上出现不少抱怨帖子。
4·They headed towards the waterhole with Wombat holding onto Mother Kangaroo's tail and grumbling all the way.
袋鼠妈妈继续背着老袋熊往有水的地方去，一路上，老袋熊不停地发牢骚。
5·He 's always grumbling.
他老是发牢骚。