Isaac Newton

What Sir Isaac Newton was doing late at night may surprise you..在深夜艾萨克·牛顿先生做的事可能会令你感到惊奇。

Sir Isaac Newton supposedly discovered gravity through the fall of an apple..据称艾萨克·牛顿爵士通过苹果落地，发现了万有引力。

One of the most well known tenets of physics — for every action, there is an equal and opposite reaction — was first discovered by Isaac Newton..物理学最广为人知的一条定律——对任何一个动作而言，存在一个相同大小的反作用——由艾萨克·牛顿发现。