However, it was rather a dispute over words because, as Einstein said, the kinematic length contraction is "apparent" for a co-moving observer, but for an observer at rest it is "real" and the consequences are measurable.
不过，这实际上是一个字面上的争论，因为爱因斯坦说过，运动学上的长度收缩，对于一起在移动的观测者而言是“表观”的，而对于在静止状态的观测者而言则是“真实”的，并且因此，是可以测量出其结果的。