translation.en: As you can imagine, even if you know physics, this should be intuitive, OK -- that stars that are closer to the mass in the middle will be rotating at a higher speed than those that are further out here, OK.
translation.zh: 如你所想，即使你不知道物理----这应该是很直观的， 这些靠近中心的恒星将会以更高的速度旋转， 相比于在外面的这些。