n someone (especially a woman) who annoys people by constantly finding fault
n an old or over-worked horse
v bother persistently with trivial complaints
v worry persistently
v remind or urge constantly
n. 不断地挑剔或批评（某人）( nag的名词复数 ); 不断地烦扰或伤害（某人）; 无休止地抱怨; 不断指责
v. 不断地挑剔或批评（某人）( nag的第三人称单数 ); 不断地烦扰或伤害（某人）; 无休止地抱怨; 不断指责