写得有点乱:

来源: 于 2012-03-31 12:33:28 [旧帖] [给我悄悄话] 本文已被阅读：次

证件: ID (identification), example: driver's licence,passport, police badge, empolyee badge

证书: certification, example: babysitting certificate, breastfeeding training certificate, plumer training certificate, nurse practitioner certificate, CPR certificate. 正式学历以外的训练和认证. 

受过相关训练后, 才有资格从事相关的工作.