Heat Death - Theory

• （吸）引力

Heat Death - Theory的用法和样例：

例句

1. He is studying Newton's theory of gravitation.
   他正在研究牛顿的引力学说。
2. When the dimensions of the source are large, it is necessary to extend the theory.
   当引力源的体积很大，就需要对原理加以引伸。