a name or symbol on a product that shows it was made by a particular company, and that it cannot be used by other companies without permission

Velcro is a registered trademark. 维可牢是一个注册商标。

something very noticeable that a person typically has or does

He was wearing one of the brightly coloured ties that are his trademark. 他戴着一条他标志性的亮色领带。

She gave one of her trademark smiles. 她露出了她那特有的微笑。