conserve energy

基本解释

Your body is trying to conserve energy stores” to carry you through the longer period of wakefulness.
身躰會努力保存能量儲備”以便使人的頭腦保持較長時間的清醒。
During most of this trek, the spacecraft is in hibernation mode, with all but the most critical electric equipment turned off to conserve energy.
在這趟旅途的絕大部分時間裡，飛船都処於休眠模式，除了最核心的電子設備以外的全部設備都被關閉以節約能量。
Professor Marshall said: "They are slow moving, efficient swimmers because they exist in a world where food is sparse and they need to conserve energy.
馬歇爾教授說：“它們是行動緩慢且有傚的遊泳者，因爲它們生活在食物稀缺的世界，需要保存能量。

For example, the restaurant has very low lighting to conserve energy.
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,除非必須再次尋找食物,否則是絕對不會浪費能量的人,也是對基因庫有貢獻的
耶魯公開課 - 關於食物的心理學、生物學和政治學課程節選
"I think the most important thing about the house is just how much energy it really does conserve.

Finally, they conclude that the notion that more efficient energy use will conserve energy is backward.
FORBES: Reflections And Lessons On Energy Challenges