柯林斯詞典platinum /?pl?t?n?m/ 1. N-UNCOUNT Platinum is a very valuable, silvery-grey metal. It is often used for making jewellery. 鉑; 白金 返回 platinum劍橋詞典a chemical element that is an extremely valuable silver-coloured metal , used in jewellery and in industry 鉑，白金 a platinum wedding ring 白金結婚戒指 返回 platinum