precious metal

noun
🔊/ˌpreʃəs ˈmetl/
🔊/ˌpreʃəs ˈmetl/
[countable, uncountable]
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  1. a very valuable metal such as gold or silver贵金属
    • a craftsman in precious metals 贵金属工匠
    • coins made of precious metal贵金属硬币