Medical researches prove that sleep deprivation can induce hunger and in turn increase the appetite.

医学研究证明，睡眠剥夺可以诱发饥饿，从而增加食欲。

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Canadian study shows that an aperitif (an alcoholic drink taken before a meal to increase the appetite) increased calorie intake to a greater extent than a carbohydrate-based drink.

根据加拿大的研究，与碳水化合物饮料相比，开胃酒(饭前提高食欲的酒精饮料)可以极大地提高卡路里摄入量。

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Even as new regulations increase the supply of longer-dated bank debt, others may suppress investors' appetite for it.

即使新规定会增加银行的长期负债，其他一些原因还是抑制投资者的兴趣。

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The increase in investor risk appetite in the market place this week is clearly evident by looking at the safe-haven U.S. Treasury market.

FORBES: Comex Gold Firmer On Some Tepid Short Covering, Bargain Hunting

Part of the reason for the increase in investor risk appetite recently has been optimism regarding the European Union leaders coming to grips with their debt and financial crisis.

FORBES: Comex Gold Firmer As It's Another "Risk On" Day In Market Place

Before answering this, let's shove to one side what you might call the RBS and Lloyds paradoxes - which is that, as semi-nationalised banks, the Treasury could simply instruct RBS and Lloyds to increase their appetite for risk, irrespective of the red ink that might flow.

BBC: Can banks be forced to lend more?