pay dirt

US /ˈpeɪ dɜrt/
UK /ˈpeɪ dɜrt/
"pay dirt" picture
1.

富矿, 含金土

soil or gravel containing a valuable mineral, especially gold, in sufficient quantities to be worth mining

:
After days of digging, the prospectors finally hit pay dirt.
经过数日的挖掘,勘探者们终于找到了富矿
The old mine was abandoned, but some believed there was still pay dirt deeper down.
旧矿被废弃了,但有些人相信更深处仍有富矿
2.

成功之源, 利润来源

a source of profit or success

:
The new marketing strategy proved to be pay dirt for the company.
新的营销策略被证明是公司的成功之源
He finally found pay dirt with his innovative invention.
他终于凭借其创新发明找到了成功之道