牢骚

grievance;complaint;discontent
～太盛防肠断，风物长宜放眼量。(毛泽东诗《和柳亚子先生》) Beware of heart break with grievance overfull,Range far your eye over long vistas. (Mao Zedong’s poem Reply to Mr.Liu Yazi)/他老发～。He’s always grumbling./～满腹full of grievances; a bellyful of complaints