Definition
to physically assault someone by striking or kicking them repeatedly.
毆打；拳打腳踢
They beat up on the boy in the playground.
他們在操場上毆打了那個男孩。
The police arrested those who beat up on the passerby.
警察逮捕了那些毆打路人的傢伙。
He was beaten up on by several classmates.
他被幾個同學毆打了。
to unfairly denounce or criticize someone.
不公正地批評或攻擊
During the meeting, many people beat up on his proposal unfairly.
在會議期間，許多人不公正地抨擊他的提案。
I feel that the media often beats up on politicians unjustly.
我覺得媒體常常無理地抨擊政治人物。
We should stop beating up on those who work hard without any basis.
我們應該停止無端地抨擊那些努力工作的人。