To act as an intermediary; to step in between parties; to intervene or mediate on behalf of others.
取引先同士の交渉に私が間に入って条件を調整した。
I stepped in between the clients' negotiations and adjusted the terms.
友達のけんかに第三者が間に入って仲裁した。
A third person stepped in to mediate my friends' fight.
弁護士が間に入ることで、争いは早く解決した。
With a lawyer stepping in, the dispute was resolved quickly.
親が間に入って話をつけることになった。
The parents decided to step in and sort things out.