If it wasn’t for gravity, there wouldn’t be life, because gravity causes stars to form and live for a very long time, keeping pieces of the world, like the surface of the Earth, out of thermal equilibrium for billions of years so life can evolve.
如果没有引力,生命将不存在 万有引力促使寿命极长的恒星得以形成 防止世界各地,如地球表面 处于热平衡状态,达几十亿年之久,使生命可以发展延续