goldmine

n.

金矿；金山；财源；宝库

1. This new invention will bring you great profits like a goldmine.
   这项新发明会像一座金矿一样给你们带来利润。
2. If you come with a Rolodex packed with potential contacts, those connections could be a goldmine to an employer.
   如果你带来了有潜在客户的关系网，那么，对雇主来说这些关系可能会是一座金矿。

RNA-Seq data: a goldmine for organelle research.
Introducing GOLDMine: A new Galaxy Database on the WEB
Urine—an untapped goldmine for biomarker discovery?
GoldMine: Automatic assertion generation using data mining and static analysis
Mapping tweets to conference talks: a goldmine for semantics
Arsenic Pollution at Obuasi Goldmine, Town, and Surrounding Countryside
Vegetative desiccation tolerance: is it a goldmine for bioengineering crops?
The Nordic medical birth registers – a potential goldmine for clinical research
Tulp M, Bohlin L. Rediscovery of known natural compound: nuisance or goldmine
[The distribution and natural degradation of cyanide in goldmine waste-solid and polluted soil]