不明确

The import of his statement is ambiguous.

他叙述意思明确。

The sense of the word is not clear.

这个词意义明确。

The evidence from bacteriologic analysis was equivocal.

这一细菌学分析证据是明确。

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

睡得迷迷糊糊时候，能有明确判断。

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

但微分变理论存在需要解释问题，空时及物理理论意义仍明确。