murmur
/ˈmɜ:mə(r); `məmɚ/ n
1 low continuous indistinct sound 低沉、 持续而不清的声音
the murmur of bees in the garden 花园中蜜蜂的嗡嗡声
the distant murmur of the sea, of a brook, of traffic, etc 远处海浪的澎湃声、 溪水的潺潺声、 车辆的隆隆声.
2 quietly spoken word(s) 低语声
a murmur of conversation, of voices from the next room, etc 喃喃的谈话声、 隔壁的人语声等.
3 quiet expression of feeling 低声的情感表述
There were murmurs of discontent from the work-force. 工人不满, 颇有微词.
4 (medical 医) faint blowing sound in the chest, usu a sign of disease or damage in the heart 心区杂音（通常为心脏疾患或损伤的症状）.
5 (idm 习语) with,out a `murmur without complaining 不抱怨; 无怨言
He paid the extra cost without a murmur. 他付了额外的费用而毫无怨言. murmur, v
1 [I] make a murmur 发连续而低沉的声音
The wind murmured in the trees. 风在林中低鸣
a murmuring brook 流水淙淙的小溪.
2 [Ipr, Tn, Tf]
~ about sth say (sth) in a low voice 低声说（某事）:He was delirious, murmuring about his childhood. 他精神恍惚, 低声叨念著童年往事.
murmuring words of love into her ear 向她喃喃耳语, 倾诉爱慕之意
He murmured that he wanted to sleep. 他咕哝著说他想睡觉.
3 [Ipr] ~ against sb/sth complain about sb/sth quietly, not openly 私下低声抱怨某人[某事物]
For some years the people had been murmuring against the government. 几年来人们一直在私下议论政府.