Incandescent light is the least energy efficient lighting.
白炽灯是效能最不好的。
So, keep installing those energy - efficient light bulbs.
因此，让我们继续安装那些节能灯泡吧。
Nuclear energy is the cleanest, most efficient energy we have - by light years.
核能是迄今为止我们拥有的最洁净、最高效的能源——以光年计算(不太明白)。
Do energy-efficient bulbs have a particularly high proportion of blue light?
节能灯的蓝光比例特别高吗？
High efficient to light, hight color index, energy-saving.
具有发光率高，显色指数高，节能优良性能。
For the energy crisis, energy-efficient electric light was needed urgently.
随着能源紧张，需要更节能的电光源。
For the energy crisis, energy-efficient electric light was needed urgently.
随着能源紧张，需要更节能的电光源。
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