General McChrystal privately reckons he needs about 400, 000 Afghan soldiers and police, double the number now envisaged, though the proportions of each are subject to debate.

麦克·克里斯托将军私底下承认他现在需要4000名阿富汗士兵和警察，是现行讨论中的两倍，尽管他知道每一个数字都要经过谈论。

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They had assumed that these types of devices should and would be subject to random double-blinded studies with controls over an appropriate time-frame to investigate safety and efficacy.

他们原先认为，这些类型的设备应该也将会在适当的时间框架内接受随机、双盲对照研究，对其安全性和有效性进行调查。

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Impossible People and Animals: these can be silly or sublime, depending upon the subject, but almost inevitably result in a confused double-take.

不可能的人和动物——光看这些人和动物，可能有些搞笑或者怪异，但是，人们总是难免会想要对它们多看几眼。

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Emulating her father's breathy voice and double-entendre-laden subject matter, Gainsbourg crafts a mature exploration of ethereal pop and new wave.

NPR: Lamenting a Love That Gets Under the Skin

Are they agitating for governments to impose worldwide taxation so that companies are double-taxed on any income earned (and already subject to tax) in other jurisdictions?

FORBES: Complaints About Tax Havens Are Misguided

This is helpful when parents know the specific subject the child is working on, like double-digit subtraction.

WSJ: The Digital Solution: A Review of LeapsterGS