bulb
n. 电灯泡；（植物的）鳞茎，球茎；球状物
复数 bulbs
例句
This makes the total cost of the bulb and energy $27.
这使得灯泡和电量的总耗费升为$27。
《柯林斯英汉双解大词典》
On the stairway to the basement, he took the light bulb out of the socket.
在通向地下室的楼梯上，他把灯泡从灯座上拧了下来。
It is easy to change a light bulb, sure, but it is harder to change the bulb and its fixture.
换一个灯泡当然很容易，但是要更换灯泡和其固定装置就比较难了。
