dog tag
noun /ˈdɒɡ tæɡ/
/ˈdɔːɡ tæɡ/
- a small piece of metal attached to a dog's collar, typically giving its name and the owner's address
（美国士兵挂在颈部的）身份识别牌 - (North American English, informal) a small piece of metal that US soldiers wear round their necks with their name and number on it
（美国士兵挂在颈部的）身份识别牌