But diffeomorphism invariant theory leaves some problems to be explained, and the meanings of spacetime and physical theory are still in question.
但微
同胚不变理论存
解释的问题，空时及物理理论的意义仍不明确。
But diffeomorphism invariant theory leaves some problems to be explained, and the meanings of spacetime and physical theory are still in question.
但微同胚不变理论存解释的问题，空时及物理理论的意义仍不明确。
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