Combining red, green and blue LEDs to produce white light has the potential to be more efficient, and the colour of the light could be tuned depending on mood or taste.
结合红绿蓝led一起生成白光有能被更有效利用的潜在可能，并且光的颜色还可以依据心情或者口味来调配。
Western Digital has slowly massaged its desktop hard drives into three categories: high-performance Black drives, mainstream Blue models, and energy-efficient Greens.
西数目前正逐渐将其桌面硬盘产品规整为三个系列：高端的黑盘系列，主流的蓝盘系列以及省电节能型的绿盘系列。
At home, it is a good idea to use energy-efficient lamps with a higher proportion of blue light during the day, and in the evening use ones with the lowest possible amount of blue light.
白天在家里使用蓝光度较高的节能灯是个好主意，在晚上则使用蓝光量可能最低的节能灯。
Plants and cyanobacteria (also called blue-green algae), she says, “have evolved highly organized photosynthetic systems for the efficient oxidation of water.”
植物和蓝藻（又称蓝绿色藻类），她说，“已经进化为高度的有组织的光合系统以有效的氧化水。”
Beijing - Ms. Cai, crisp and efficient in her bright blue Olympic volunteer shirt, has a list of instructions to remember.
北京报道— 身穿亮蓝色志愿者制服的蔡小姐工作干练，她必须记住长长一列的规定和说明。
Conclusion: Anterior capsule staining with micro-methylene blue is a safe and efficient technique in white cataract circular continuous capsulorhexis, but proper operation must be taken.
结论：微量美蓝前囊染色可安全有效地应用于白色白内障连续环形撕囊术中，但必须注意操作技巧。
If blue light does have adverse health effects, then environmental concerns, and the quest for energy-efficient lighting, could be at odds with personal health.
如果蓝光确实对健康有不良影响，那么环境问题，和对节能照明的需求，将对个人健康产生冲突。
And the proliferation of electronics with screens, as well as energy-efficient lighting, is increasing our exposure to blue wavelengths, especially after sundown.
而且带屏幕的电子产品，以及节能灯在逐渐增加我们暴露在蓝光下的时间，尤其是日落以后。
And the proliferation of electronics with screens, as well as energy-efficient lighting, is increasing our exposure to blue wavelengths, especially after sundown.
而且带屏幕的电子产品，以及节能灯在逐渐增加我们暴露在蓝光下的时间，尤其是日落以后。
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