which will be some elliptical motion.

行星会做椭圆运动
By the way,

顺便说一下
Mr. Newton did not have math guys he could go to.

牛顿先生可没有数学外援
Not only did he formulate laws of gravitation,

他不仅找出了引力定律的公式
he also invented calculus

还发明了微积分
and he also learned how to solve the differential equation for calculus.

同时也得出了微分方程的解法
He probably felt that nobody around was doing any work,

他或许会觉得周围的人都在尸位素餐
because all the thing was given to this one person.

因为所有的问题都留给了他一个人
It's really amazing

这一点非常神奇
that what Newton did in the case of gravity

牛顿在引力方面的研究
was to find the expression for this.

只是为了找出这个的表达式
A few years earlier he had also gotten this law.

他实际上几年前已经发现了这个定律