jump on somebody phrasal verbphr v informal CRITICIZEto criticize or punish someone, especially unfairly 〔尤指不公正地〕批评，惩罚 for He used to jump on me for every little mistake. 以前我一有点小错他就要大加斥责。
jump for• Dad jumps on Jeff for every little mistake.
→ jump on somebody at jump1(PHRASAL VERB)