Mathematically, Einstein found that spacetime is similar to a stretchy fabric, much like a trampoline.
Mathematically, Einstein found that spacetime is similar to a stretchy fabric, much like a trampoline.
爱因斯坦通过数学方法发现时空结构是弹性的，就像蹦床。
Mathematically, Einstein found that spacetime is similar to a stretchy fabric, much like a trampoline.
爱因斯坦通过数学方法发现时空结构是弹性的，就像蹦床。