According to the new definition, a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity.
According to the new definition, a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity.
根据新的规则，一颗行星是指该星体围绕太阳运行，并且足够大以至于在自身的引力作用下呈圆形。