假设有一个灯泡和五个可以在不同时间和不同地点打开它的开关。
Imagine there are one bulb and five switches to turn it on at different times in different places.
现在假设有一个灯泡和五个可以在不同时间和不同地点打开它的开关。
Now imagine there's one bulb and five switches to turn it on at different times in different places.
由于节能灯与白炽灯泡的工作原理不同，三路开关的固定灯具和调光器需要特殊类型的节能灯泡。
Since CFLs don't work the same way as incandescent bulbs, fixtures with three-way switches and dimmers require a special type of CFL that will work with those fixtures.
在这个例子中，这个开关能够被转到全开和全关的任一位置，来调整灯泡的亮度。
In this case, the switch can be turned to any position between fully off and fully on to vary the brightness of the bulb.
这和开灯类似，不懂电的人，会去试灯泡而不知道去打开开关，所以灯不会亮。
It is like turning on an electric lamp. A person who does not know about electricity will try at the bulb instead of the switch, so the lamp does not light.
这和开灯类似，不懂电的人，会去试灯泡而不知道去打开开关，所以灯不会亮。
It is like turning on an electric lamp. A person who does not know about electricity will try at the bulb instead of the switch, so the lamp does not light.
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