国家对高涨的粮食价格和食品短缺作出的反应是，进一步努力提高粮食自给能力和重新建立公共储备。

Countries have been responding to high food prices and grain scarcity by scaling up efforts to achieve grain self-sufficiency and rebuild their public reserves.

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储备货币是一种有成本的全球公共商品。

Reserve currency status is a global public good that comes with a cost.

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当时动机出于游戏储备，而非公共安全。

Game stocks were the motive, rather than public safety.

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