Day96词义辨析:MurmurWhisperMumbleMutterGrumble低语这几个词不太好区别都是低声说话嘟哝从声音大小排列可以这样来看:Grumble - Loudest of the bunch most angry. Loud enough that you can understand at least half of the words said.声音最大Mutter - A