Edison's bulb is, at its core, a burning filament that casts the glow of a flame.
爱迪生的灯泡，在它的中心，有一个燃烧的灯丝产生火焰的光芒。
Edison's lab put a lot of effort into making a bulb with a platinum filament, but that work went nowhere, because platinum has a relatively low resistance.
爱迪生的实验室为制造铂丝灯泡付出了大量的努力，但这些投入都白费了，因为铂的电阻相对较低。
An incandescent bulb, made of a wire filament encased in glass, emits only 5% of the energy it consumes as light; the rest is wasted as heat.
由灯丝封装在玻璃里而制成白炽灯，只有5%的能量被用于发光；其余都以热能被浪费掉了。
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