It is important to conserve energy.

节能十分重要。

《牛津词典》

People should insulate their homes to conserve energy.

人们应该使住房隔冷以保存能量。

《柯林斯英汉双解大词典》

The factories have closed for the weekend to conserve energy.

这些工厂在那个周末关了厂以节省能源。

《柯林斯英汉双解大词典》

For example, the restaurant has very low lighting to conserve energy.

VOA: special.2009.04.10

The ones who would conserve energy, that is they were sedentary when possible, other then when they had to go get food would again not waste their calories but would save them and contribute to the gene pool.

那些保存能量的人,那些能躺不坐,能坐不站的人,除非必须再次寻找食物,否则是绝对不会浪费能量的人,也是对基因库有贡献的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

"I think the most important thing about the house is just how much energy it really does conserve.

VOA: special.2009.10.27

These, he said, were caused by fish and shellfish remaining inactive in order to conserve energy.

BBC: Guernsey fishermen face losses due to cold weather

Finally, they conclude that the notion that more efficient energy use will conserve energy is backward.

FORBES: Reflections And Lessons On Energy Challenges

It will then descend slowly under low power throughout the night to conserve energy.

ECONOMIST: Electric planes