put someone out to pasture
让（某人）退休；让（某人）离职
口语·表达强制退休
英文释义
to retire someone or remove them from their position of authority or responsibility due to age or incompetence
例句
After 40 years, they put the old manager out to pasture.
典故来源
源自农业实践，老马不再干活被放牧，比喻因年老或无能而退休。