help them conserve heat in the cold. 有助于在寒冷的环境中保温
The earth was able to conserve water in liquid form. 地球能够将水以液体形式存贮起来
a struggle to conserve precious energy in the open ocean. 在这广袤的大洋中只为获得宝贵的能量
It's bulk helps to conserve body heat and also broadens it's menu. 它的体型有利于 帮助保持体内热量和扩充食物来源