How? Well according to Einstein's math, if space is uniformly filled with an invisible energy, sort of like a uniform, invisible mist, then the gravity generated by that mist would be repulsive, repulsive gravity, which is just what we need to explain the observations.
怎么说呢？根据爱因斯坦的数学， 如果空间是 被无形的能量均匀地充满， 就像一种统一，无形的雾， 这种雾所产生的重力 会是 排斥重力， 这正是我们需要解释的观测。