No reference is made to molecules or to molecular energy . 没有涉及各个分子或分子的能量。
2.
Molecular energy is the most vital and useful form of energy to animals . 分子能对于动物是最重要和最有用的能量形式。
3.
It is impossible to have a cyclic machine that completely converts the random molecular energy of heat flow into the ordered motion of mechanical work . 不可能得到一种循环机器能把热流的无序的分子能量完全转变为机械功的有序运动。
