As a result, nearly every ounce of gold ever mined is still with us, which means gold's real price is hard to alter thanks to a great deal of gold stock in existence relative to new discoveries.

因此，历史上开采的几乎每一盎司黄金都未曾缺失，也就是说，黄金的真实价格很难改变，这要感激相对于新开采的金矿来说，现有黄金的储量极为庞大。

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Does watching Real Housewives alter genes in whatever brain you have left?

观看电视剧能否改变你大脑哪部分的基因？

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Concluding this treaty would be a real achievement for Mr Obama - but it would follow three previous nuclear disarmament deals and it would not visibly alter the balance of power in the world.

签署了这个协议，奥巴马就有了实际的成就——但它排在前三个核装备协议之后，世人无法明显地看到权力的分布到底倾斜了没有。

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Another possible drawback: In some cases, crowd-sourced workers assigned to short tasks aren't likely to feel any real engagement with a business, says Michael Alter, the president of Chicago-based small-business payroll firm SurePayroll.

WSJ: Small firms, Start-ups Drive Crowdsourcing Growth