来自Goldsmith’s Hall in London,伦敦金器所，18世纪伦敦的金器银器官方权威评测机构，mark,标记。即金银纯度标记，引申词义特征，特点。
英文词源
hallmark
hallmark: [18] The hallmark on a piece of gold, silver or platinum, which allows it to be legally sold, is so called simply because it was originally applied in Goldsmiths’ Hall, the headquarters of the Goldsmiths’ Company (a City livery company), where the London assay office was situated. The building is in Foster Lane, to the northeast of St Paul’s Cathedral in the City of London.
hallmark (n.)
1721, official stamp of purity in gold and silver articles, from Goldsmiths' Hall in London, site of the assay office; see hall + mark (n.1). General sense of "mark of quality" first recorded 1864. As a verb from 1773.
实用例句
1. One hallmark of a good politician is his ability to influence people.
衡量一个优秀政治家的标志之一就是他影响大众的能力.
来自《简明英汉词典》
2. Clear expression is the hallmark of good writing.
表达清楚是好文章的特点.
来自《简明英汉词典》
3. They are not something the Hallmark people would inscribe on a card.
HallMark贺卡公司的人员不会将之印在卡上.
来自互联网
4. His designs show a love of simplicity which is very much his hallmark.
他的设计显示出对简约风格的偏爱，这正是他一贯的特点。
来自柯林斯例句
5. It's a technique that has become the hallmark of Amber Films.