hallmark

1. N-COUNT The hallmark of something or someone is their most typical quality or feature. 标志; 特征

It's a technique that has become the hallmark of Amber Films. 这是一项已成为安伯电影公司标志的技术。

2. N-COUNT A hallmark is an official mark put on things made of gold, silver, or platinum that indicates the quality of the metal, where the object was made, and who made it. (金银等制品上的) 标记

Early pieces of Scottish silver carry the hallmarks of individual silversmiths. 早期的苏格兰银器上都有各个银匠的标记。