不明确

The import of his statement is ambiguous.

他的叙述意思不明确。

The sense of the word is not clear.

这个词的意义不明确。

The evidence from bacteriologic analysis was equivocal.

这一细菌学析的证据是不明确的。

When you are befogged ,it is impossible to have a clear judgement.

当迷迷糊糊的时候，不能有明确的判断。

But diffeomorphism invariant theory leaves some problems to be explained, and the meanings of spacetime and physical theory are still in question.

但胚不变理论存在需要解释的问题，空时及物理理论的意义仍不明确。