Clearly, a refrigerator, which is a physical system must obey not only the first law(energy conservation) but the second law of thermodynamics as well.
很明显, 冷冻机是一种物理系统, 因此它不仅必须遵从第一定律（能量定恒）, 也必须遵从热力学的第二定律。
The boys made away with the contents of the refrigerator.
男孩子们把冰箱中的食物吃得精光。
Perishable food should be stored in a refrigerator.
易腐的食物应储存在冰箱里.
