undeveloped proven reserves
... proven recoverable reserven.证实可开采储量 undeveloped proven reserves未开发探明储量 A proven challenge to wrinkles消除皱纹，立见功效 ...
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undeveloped proven reserves
未开发的探明储量
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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As for Enerplus, it may never reach a 14% yield, simply because the trust is so deep in proven reserve life (about 10 years) and in undeveloped potential reserves, including oils sands, which carry a stock-market-type premium these days.
FORBES: Magazine Article