短语是identity card，意思是身份证，例如：
1、He showed his identity card and went in.他把工作证亮了一下就进去了。
2、Face authentication system using the Chinese second generation identity card.使用第2代身份证的人脸识别身份认证系统。
3、What are the benefits of using a smart identity card?使用智能身份证有甚么好处
