It might seem unreasonable that expectations about possible events can drive prices up, but consider the situation of people in a lifeboat on the open ocean.

对可能发生事件的预测会驱使价格上涨看起来很不切实际，但考虑下在宽阔的海洋上，人们在救生艇中这样一个情况。

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If China can keep growing strongly — a very big assumption — at some point, competition for resources will drive up prices again.

如果中国能够继续保持强劲增长，从而维持巨大的消费，对资源的竞争将再度推高价格。

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These controls encourage hoarding, drive up prices and hurt the poorest people around the world who are struggling to feed themselves.

这些控制措施怂恿囤积居奇，抬高价格，伤害到全世界竭力想吃饱饭的最贫困人民。

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Putting some of that credit (high demand) into a commodity market (limited supply) will drive prices up.

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Accordingly, a lesser amount of bonds or stocks showing up for sale (or purchase) can drive market prices lower (or higher), thereby exacerbating volatility.

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