The vital part of the incandescent electric lamp is the tungsten wire inside the bulb.
白炽电灯的关键部分是灯泡里的钨丝。
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.
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。
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