But diffeomorphism invariant theory leaves some problems to be explained, and the meanings of spacetime and physical theory are still in question.
但微分同胚不变
存在需要解释的问题，空时及物的意义
不
确。
But diffeomorphism invariant theory leaves some problems to be explained, and the meanings of spacetime and physical theory are still in question.
但微分同胚不变存在需要解释的问题，空时及物的意义不确。
：
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