Indirect lighting over your work area usually works best .

你工作区域上方的间接照明通常效果最好。

This lighting system helps combat symptoms of jet lag .

这套灯光系统可以帮助应对飞行时差反应的症状。

Promised yourself to quit smoking in the new year , but just can 't stop lighting up ?

发誓在新的一年里一定要戒烟，却又忍不住点燃一支？

The first lighting revolution was powered by gas .

照明领域的第一次革命以可燃气体作为燃料。

That makes traditional lighting expensive and environmentally hazardous .

这就使传统的照明方式昂贵而且对环境有害。