terrestrial gravitation

例句：

1. 1. The terrestrial planets are the four innermost planets in our solar system.
   地行星是太阳系内四个最内侧的行星。
2. 2.The terrestrial ecosystem is a complex network of living organisms and their interactions with the environment.
   陆生生态系统是一个复杂的生物群落及其与环境的相互作用网络。
3. 3. The terrestrial biosphere is the largest and most diverse ecosystem on Earth.
   陆生生物圈是地球上最大的、最多样化的生态系统。