a criminal gang的用法和样例：
- He is the front man for a criminal gang.
- A member of a criminal gang or crime syndicate.
- A criminal gang terrorized the neighbourhood.
- The government official connived with a criminal gang to smuggle goods.
- I think that this case was committed by a criminal gang, rather than just one person.
- They have unwittingly involved in a drug trafficking case and are being pursued by SUNG PO(YAM TAT WAH), who is a hitman sent by a criminal gang.