Countries in difficulty should adopt the "normal policy mix" of reducing budget deficits and improving their competitiveness.

处于困境的国家应采用减少预算赤字和提高竞争力的普通政策组合解决问题。

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But there's some difficulty in finding the right mix.

但找到一个正确的组合有点难。

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Reinhard Strey of the University of Cologne is, however, having another go. He thinks he has cracked the main (and obvious) difficulty—that oil and water do not easily mix.

事实上这个方法很多年前便已为人知晓，但是之前试图将其转化为实践技术的尝试都失败了，然而克隆大学的莱茵哈德斯特雷现在又卷土重来，他认为自己已经攻克其中主要的（也是最明显的）的难关—油和水不易混合的问题。

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If we add greater uncertainty, as reflected by the distribution of the new normal, to the mix, then the difficulty of investing based upon economic forecasts is likely to be squared!

FORBES: Forget New Normal, Old Rules Are Alive And Well

On-cell touch, meanwhile, has seen greater adoption, but the mix has shifted to smaller screen sizes used in mobile phones and digital still cameras, whereas it has had difficulty competing with projected capacitive in tablet PC applications.

ENGADGET: Report: Touchscreen demand to grow by 90-percent, led by mobile, tablet markets