hall·mark /ˈhɔlˌmɑrk/
純度檢驗證明,品質證明(vt.)加蓋純度檢驗證明
hallmark
n 1: a distinctive characteristic or attribute [syn: trademark,
earmark, stylemark]
2: a mark on an article of trade to indicate its origin and
authenticity [syn: authentication, assay-mark]