This is the 7189th most frequent Japanese word.
一翼
"One wing" or "a part contributing to a whole."
一翼 is used to describe the part he played or the contribution he made to the success.
彼はこのプロジェクトの成功に一翼を担った。
He contributed to the success of this project.
一翼 emphasizes the role or involvement of the company in the activities.
その会社は環境保護活動に一翼を担っている。
The company is taking part in environmental protection activities.
一翼 is used to indicate the addition or contribution his remarks made to the discussions.