如何区分以下常用词

来源: 于 2005-04-17 21:41:57 [旧帖] [给我悄悄话] 本文已被阅读：次

1。工卡 （what is the english name for it?)
2。劳工卡（what is the english name for it?)
3。劳工纸（what is the english name for it?)
4。Labor Certificate。
5。Work Permit。
6。Employment Authorization Card.

Thanks.