2--Why do I need to do that?
 
1--My character is in question. Someone was robbed at work and unless I have an alibi, I'm a suspect.
 
2--Oh, my goodness. Who do I need to talk to?
 
1--My employer. Can you come in to the office tomorrow?
 
2--Absolutely. I think I still have the boarding passes from our flight here somewhere.
 
1--That would be the real proof. Didn't we have to show ID to get on the plane.
 
2--Since 9.11 I think every airline requires that the passengers show ID to board.
 
===================================
注解：
 
1.vouch担保
2.alibi（法律）不在场证明
3.boarding pass登机牌
 
===================================
译文：
 
1--你可以替我担保我昨天是和你在一起吗？
2--为什么需要我的担保？
1--我被人怀疑了，有人在上班时被抢劫，除非我有不在场证明，否则我会成为嫌疑犯。
2--我的老天，我要告诉谁呢？
1--我的老板，你明天能来我们公司一趟吗？
2--当然没问题，我想我还留着我们坐的航班的登机牌。
1--那可以成为铁证，因为我们得出示身份证明才能上飞机。
2--自从9·11之后，每家航空公司都要求乘客登机时出示身份证明。