Both countries have joined with other developing countries to demand money and technology from rich countries to make the transition to a greener energy mix.

VOA: standard.2009.11.27

It's a greener choice to make.

这个选择也很环保。

地铁的好处 - SpeakingMax英语口语达人

McKibben says the move to a new and greener economy won't happen overnight.

VOA: standard.2010.04.21

Trains are fuel efficient, they relieve traffic and airport congestion and they also reduce our dependence on foreign oil, making passenger trains the safer,cleaner, greener transportation option."

VOA: standard.2010.02.15