Some examples of word usage: beat smb. up by ganging up on
1. The group of bullies beat him up by ganging up on him after school.
放課後、いじめっ子たちが彼を取り巻いて殴りつけた。
2. They ganged up on the new kid and beat him up in the playground.
彼らは新入りの子供を取り囲んで、遊び場で殴りつけた。
3. The gang members ganged up on the rival gang member and beat him up.
ギャングのメンバーたちはライバルのメンバーを取り囲んで殴りつけた。
4. The students ganged up on the unpopular classmate and beat him up during lunch break.
生徒たちは昼休み中に人気のないクラスメートを取り囲んで殴りつけた。
5. A group of thugs ganged up on the innocent man and beat him up in the alley.
一団のならず者が無実の男を取り囲んで路地裏で殴りつけた。
6. The football players ganged up on the referee and beat him up after a controversial call.
サッカー選手たちは物議を醸す判定の後、審判を取り囲んで殴りつけた。