hallmark

特征、标志、特色

Careful attention to detail is the hallmark of her work.

注重细节是她作品的一大特色。

纯度印记、品质认证标记金银器

The silver teapot carries a hallmark from the eighteenth century.

这只银茶壶上有十八世纪的纯度印记。

打上纯度印记、加盖品质认证常用被动

All the rings were hallmarked before they went on sale.

所有戒指在上市前都已打上纯度印记。