gang up

基本解释

A het-up gang of young men were advancing on a police line on Mare Street, stones in their hands.
一個亢奮的年輕人幫派在Mare Street街上朝著警方封鎖線走過去，他們的手裡握著石塊。
In addition, they fostered an atmosphere where employees were expected to gang up on the person who was "it."
另外，他們還制造了一種讓員工聯郃起來反對那人…的氣氛。
bbs.chinadaily.com.cn
America is constantly looking for signs that China is going to welsh on the deal and turn aggressive—and China is looking for signs that America and its allies are going to gang up to stop its rise.
美國一直在尋找中國耍賴的信號，好以此尋釁滋事；而中國也在尋找美國及其盟友相互勾結遏制自己崛起的信號。

Martinez says arrests are up because federal payouts have boosted police programs targeting illegal guns, drugs and gang activity.

The kiranas should gang up into co-operatives so that they can buy in bulk from suppliers.
ECONOMIST: India needs a supermarket revolution
Year 5 is the time to pick a villain and gang up on him.
ECONOMIST: Plenty of gloom
Too fast and the other detractors will gang up on the new leader.
FORBES: Kim Jong Un's Challenges in Taking Over the Family Business (North Korea)

If people gang up on someone, they unite against them for a particular reason, for example in a fight or argument.