gold mine
noun uk/?ɡ??ld ?ma?n/ us/?ɡo?ld ?ma?n/
[ C ]金矿
a place where gold is taken from the ground
[ S ]宝库;宝藏;财源
something that produces wealth or information
The archive is a gold mine for historians. 这个档案馆对于历史学家来说就是一座宝库。


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