bulb /bʌlb/ CET4 TEM4

• 1. 

  N-COUNT A bulb is the glass part of an electric light or lamp, which gives out light when electricity passes through it. 电灯泡

  例：

  The stairwell was lit by a single bulb.

  楼梯间只有一盏灯照明。

• 2. 

  N-COUNT A bulb is a root shaped like an onion that grows into a flower or plant. 球茎

  例：

  ...tulip bulbs.

  …郁金香球茎。