대전시와

In a sentence

• 대전시와 서울시의 협력은 중요합니다.

  The cooperation between Daejeon City and Seoul City is important.

  Here, '대전시와' is used to indicate an associative relationship with another entity (서울시). It marks the city of Daejeon as part of the pair being discussed.

• 대전시와 함께 환경 보호 프로젝트에 참여했습니다.

  I participated in an environmental protection project together with Daejeon City.

  In this sentence, '대전시와' serves to include Daejeon City as a collaborative entity involved in an action.

• 대전시와 연관된 문제를 조사하고 있습니다.

  We are investigating issues related to Daejeon City.

  Here, '대전시와' implies a connection or relevance to Daejeon City with the issues being investigated.