1. People should insulate their homes to conserve energy. 人们应该使住房隔冷以保存能量。
2. We should conserve oil and gas by making full use of other energy sources. 我们应该通过充分利用其他能源节约石油和天然气。
3. Whales carefully conserve their oxygen when underwater in a couple of ways. 鲸鱼在水下以几种方式小心地保存它们的氧气。
4. Many have been attempting to conserve water by irrigating less frequently or by switching to crops that require less water. 许多人试图通过减少灌溉频率或改种需水量更少的作物来节约用水。
5. Some automobile makers and customizers can fit your tank with a kind of foam used in race cars to protect fuel tanks and conserve fuel. 一些汽车制造商和定制服务商可以在你的油箱里填入一种用于赛车的泡沫材料来保护油箱和节约燃料。