这是因为鲜艳的颜色是在许多食物中发现的天然颜色，所以能够提振人们的精神。

This is because bright colors are natural colors found in many foods, and, therefore, able to raise people's spirits.

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西方国家的中央银行习惯于这样一个想法，即他们工作的一部分是要设法在萧条之后提振精神。

CENTRAL bankers in Western countries are getting used to the idea that part of their job is to try to raise animal spirits after a slump.

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来杯黑咖啡可助你提振精神。

A cup of black coffee can help refresh you.

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