hum /hʌm/ CET6 TEM4 ( humming, hummed, hums )

• 1. 

  V-I If something hums, it makes a low continuous noise. 发出连续低沉的声音

  例：

  The birds sang, the bees hummed.

  鸟儿唱歌，蜜蜂蜂鸣。

• 2. 

  N-SING Hum is also a noun. 连续低沉的声音

  例：

  ...the hum of traffic.

  …低沉的车流声。

• 3. 

  V-T/V-I When you hum, or hum a tune, you sing a tune with your lips closed. 哼 (曲子)

  例：

  She was humming a merry little tune.

  她轻轻地哼着一首欢快的小曲儿。

• 4. 

  V-I If you say that a place hums, you mean that it is full of activity. (地方) 繁忙

  例：

  The place is really beginning to hum.

  这个地方真的开始热闹繁忙起来了。