bul·lion
noun/ˈbʊliən/
/ˈbʊliən/
[uncountable]- gold or silver in large amounts or in the form of bars
大量的金（或银）；金（或银）条 - gold bullion
金条
Oxford Collocations DictionaryBullion is used after these nouns:- gold
Word OriginMiddle English: from Anglo-Norman French, in the sense ‘a mint’, variant of Old French bouillon, based on Latin bullire ‘to boil’. - gold bullion