It is important to conserve energy.

节能十分重要。

People should insulate their homes to conserve energy.

人们应该使住房隔冷以保存能量。

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。

Check key area and conserve energy.

检查重点部位，节约能源。

Conserve energy by using efficient light bulbs.

使用节能灯泡节省能源。