1. N-COUNT If you describe something or someone as a treasure trove of a particular thing, you mean that they are a very good or rich source of that thing. 寶庫(kù)[usu sing, N 'of' n]

The dictionary is a vast treasure trove of information. 這本字典是一個(gè)信息的巨大寶庫(kù)。

2. N-COUNT You can refer to a collection of valuable objects as a treasure trove. 貴重物品的收藏[usu sing, oft N 'for' n]