1. I joined a frat in college and made some lifelong friends.
Translation: 我在大学加入了一个兄弟会，结识了一些终身的朋友。

2. The frat house threw a huge party last night.
Translation: 兄弟会的房子昨晚举办了一个盛大的派对。

3. He's always wearing his frat letters around campus.
Translation: 他总是在校园里穿着他兄弟会的字母衣服。

4. The frat boys are known for their wild parties.
Translation: 兄弟会的男孩以狂野的派对而闻名。

5. She's dating a guy from a rival frat.
Translation: 她正在和一个来自对手兄弟会的家伙约会。

6. The frat members volunteered at a local charity event.
Translation: 兄弟会成员在当地的慈善活动中做义工。