law of thermodynamics

例句：

1. 1. The law of thermodynamics states that energy cannot be created ordestroyed.
   热力学定律表明能量不能被创造或销毁。
2. 2. This law of thermodynamics explains why heat flows from hotter to cooler objects.
   这个热力学定律解释了为什么热量从热的物体流向冷的物体。
3. 3. In the field of thermodynamics, scientists study how matter andenergy interact.
   在热力学领域，科学家们研究物质和能量是如何相互作用的。