be a discredit to

• 成为 ... 的耻辱
• 给 ... 丢脸

be a discredit to的用法和样例：

例句

1. Violent fans bring discredit on their teams.
   粗野的球迷给他们的球队丢脸。
2. He made a real pig of himself at the restaurant.
   他在餐厅里大吃大喝，真丢脸。