DESIGN: a controlled case study.

设计：同期对照病例分析。

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DESIGN: Randomized controlled case observation.

设计：随机对照病例观察。

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We keep it in a climate-controlled case and we hardly ever move it, because with any sudden shock it could just crumble to dust.

我们一直把它保存在严格控制气候变化的展示台里，几乎不曾移动过；因为任何突然震动都可能使它瞬间崩溃，化为一地尘埃。

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One of Benedict XVI's last acts as pope, according to Vatican Radio, was to authorize the broadcast of video of the shroud from Turin Cathedral, where the mysterious Christian relic is kept, out of sight, in a bulletproof, climate-controlled glass case.

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And, these trillion dollar cash reserves are controlled in every case by the respective royal families, typically in sovereign or quasi-sovereign wealth funds.

CENTERFORSECURITYPOLICY: The double-edged sword

The authors controlled for the complexity of each case: The hardest cases didn't necessarily go to the most experienced surgeons.

WSJ: Videogames, Soldiers, Surgeons and Venusian Atmosphere | Week in Ideas