v. 降低〔某职位〕的重要性;降〔某人〕的职 ≠ upgrade
v. 低估,轻视
v. 宣布〔某事〕不那么严重,使降级
Police often downgrade the seriousness of violence against women in the home.
警方往往低估妇女所受家庭暴力的严重性。
She's been downgraded from principal to vice-principal. 她已从校长降职为副校长。
BrE /əˌbriːviˈeɪʃn/