词根来源:
n. 电灯泡鳞茎球状物
vi. 生球茎膨胀成球状
The root of the daffodil is a bulb.
水仙花的根是一种球茎。
The bulb of the thermometer is filled with mercury.
温度计的膨胀部分里装的是水银。
We all know that Edison invented bulbs.
我们都知道爱迪生发明了灯泡。
The bulb should just screw into the socket.
把灯泡拧到灯口上就行。
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。
