Maybe because it's without any extensions, or it just doesn't make sense?

或许是因为它的没有任何扩展，或只是没有意义呢？

youdao

There will be no extensions without prior, written, consent of the instructor.

事先没有导师的书面许可不得延期。

youdao

There will be no extensions without prior, written, consent of the instructor.

事先没有导师的书面许可不得延期。

youdao