n.

1. 轻柔持续的声音，沙沙声，潺潺声[C]
   He sat listening to the murmur of the little brook.

   他坐着倾听小溪流水的潺潺声。

2. 【医】（心脏的）杂音[C][U]
3. 低语声[C]
   She gave a murmur of approval.

   她低声表示同意。

4. 低声抱怨[S]
   He made no murmur at my suggestion.

   他对我的建议没有表示不满。

vi.

1. 发出轻柔持续的声音
   The breeze murmured in the pines.

   松林里微风沙沙作响。

2. 私语，小声说话
   He is murmuring to himself.

   他在低声自言自语。

3. 私下抱怨，咕哝[（+at/against）]
   The people murmured against the government.

   人们私下抱怨政府。

vt.

1. 低声说
   He murmured something she didn't quite catch.

   他咕哝了一句什么话，她没有听清楚。

n.

1. a low continuous background noise.
2. a quietly spoken utterance.
   ▸the quiet or subdued expression of a feeling.
3. Medicine  a recurring sound heard in the heart through a stethoscope that is usually a sign of disease or damage.

v.

1. say something in a murmur.
2. make a low continuous sound.