Hallmark

(n.)

1. a feature of quality that is typical of sb/sth

特征；特点

e.g. Police said the explosion bore all the hallmarks of a terrorist attack.

警方称这次爆炸具有恐怖分子袭击的所有特征。

2. a mark put on gold, silver and PLATINUM objects that shows the quality of the metal and gives information about when and where the object was made.

金银纯度标记（打在金、银、铂制品上，表示纯度、生产日期及产地）

(v.)

to put a hallmark on metal goods

给...打金银纯度印记

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