결정되어서는

결정되어서는

"Being decided" or "is decided."

Here, '결정되어서는' is utilized in a negated form to underscore matters that demand careful consideration and should not be hastily or firmly decided.

결정되어서는 안 되는 중요한 사항들에 대해서 논의가 필요합니다.

It is necessary to discuss important matters that should not be decisively settled.

This sentence employs '결정되어서는' to indicate that preliminary decisions have been finalized as a prerequisite for the next actions.

결정되어서는 진행될 프로젝트의 첫 단계가 준비 중입니다.

The initial stage of the project, for which decisions have been concluded, is in preparation.

In this sentence, '결정되어서는' is used to suggest that a decision has been firmly made, implying limited flexibility for future alterations.

그 계획은 이미 결정되어서는 미래에 변화가 어려울 것입니다.

That plan has already been decided upon, so changes may be difficult in the future.