他退学，然后加入一个黑社会社团。

He dropped out of school and join a triad.

youdao

还是日本的黑社会社团首先为灾民提供流动厨房。

Yakuza, the Japanese Mafia, were the first to set up soup kitchens for the victims.

youdao

It's like a Savings and Loan Association except that credit unions are created by some entity, some club or group, and they're not open to the whole public.

这有点像储贷协会,不同点在于,信用合作社是由某个独立群体所创建的,比如社团或集体组织,它不面向整个社会公众

耶鲁公开课 - 金融市场课程节选