tag

1. N-COUNT A tag is a small piece of card or cloth which is attached to an object or person and has information about that object or person on it. 标签

Staff wore name tags and called inmates by their first names. 工作人员戴着姓名标签，对同僚直呼其名。

2. →see also price tag

3. N-COUNT An electronic tag is a device that is firmly attached to someone or something and sets off an alarm if that person or thing moves away or is removed. (电子) 跟踪器

Ranchers are testing electronic tags on animals' ears to create a national cattle-tracking system. 牧场主正在检测动物耳朵上的跟踪器，以建立一个全国性的家畜跟踪系统。

4. N-UNCOUNT Tag is a children's game where one child runs to touch or tag the others. (儿童玩的) 触碰捉人游戏

5. V-T If you tag something, you attach something to it or mark it so that it can be identified later. 给…贴标签

Professor Orr has developed interesting ways of tagging chemical molecules using existing laboratory lasers. 奥尔教授已经研发出了用现有的实验室激光给化学分子贴标签的有趣方法。