a. of or relating to or caused by gravitation
a. 重力的
1. The gravitational force keeps the planets in orbit around the sun.
引力使行星围绕太阳运行。
2. Scientists study gravitational waves to learn more about the universe.
科学家研究引力波以了解更多关于宇宙的信息。
3. The gravitational pull of the Earth affects how we move and feel weight.
地球的引力影响我们如何移动和感受重量。