In colder weather, your cat will curl up into a tight, heat-conserving ball.天气更冷时，猫会为了保存热量而紧紧地缩成一团。It's vital that we find new methods of producing and conserving energy.我们必须找到新的方法生产和节约能源，这是很重要的。We need to drive home the message now that conserving water is important.我们现在需要强调保护水资源的重要性。