vi.

1. （蜜蜂等）发嗡嗡声
   The refrigerator motor hummed.

   冰箱的马达嗡嗡地响着。

2. 发哼哼声
3. 哼曲子
   He hummed as he walked.

   他一边走一边哼着歌。

4. 忙碌，活跃[（+with）]
   The office is humming with activity.

   办公室里一片忙碌。

vt.

1. 哼（曲子）
   She was humming a tune to herself.

   她自个儿哼着小调。

2. 用哼声表示

n.[U]

1. 嗡嗡声
   He could hear the hum of the bees in the garden.

   他听得见花园里蜜蜂的嗡嗡声。

2. 哼哼声
3. 哼曲子的声音

int.

1. （表示犹豫，不满等）嗯，哼，哦

v.

1. make a low, steady continuous sound like that of a bee.
   ▸sing with closed lips.
2. informal be in a state of great activity.
3. Brit. informal smell unpleasant.

n.

exclam.