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
存在需要解释
问题，空时及物理理
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.
但微同胚不变理存在需要解释问题，空时及物理理义仍不明确。
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