所有代表都被要求佩戴显示姓名和公司的徽章。

All delegates were required to wear a ___badge showing their name and company.

保安在允许我进入大楼前检查了我的证件。

The security guard checked my ___badge before allowing me into the building.

在展会上，每位访客都收到了一枚彩色徽章，以标识其参与者身份。

At the exhibition, each visitor received a colourful ___badge to identify them as a participant.