一旦塞尔维亚符合了成员国的严格标准，它的成员国资格就必须被承认。

Once Serbia meets tough standards for membership, it must be admitted.

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但是，由于对学院的评估标准不一，直到后来它们才被承认是学院。

However, it was not until later that they were admitted as colleges, due to different standards of a college.

youdao

但是，由于对学院的评估标准不一，直到后来它们才被承认是学院。

However, it was not until later that they were admitted as colleges, due to different standards of a college.

youdao