节能

jié néng dēng pào

节能灯泡

energy-efficient bulb

jié néng fǎ

节能法

energy-saving law

gèng jīng jì de jié néng jì shù zài fā dá guó jiā yǐ tóu rù shǐ yòng

更经济的节能技术在发达国家已投入使用。

Cheaper energy conservation techniques have been put into operation in the developed world.

xiàn zài de zhào míng shè bèi gèng jiā jié néng

现在的照明设备更加节能。

Lighting is now more energy efficient.