That belief has made Brazilians a people who are both optimistic and sometimes heedless: "God repairs at night the damage that man does by day," an old Portuguese-language proverb assures.

由于这样一种信念，巴西人既积极乐观，同时又有些粗枝大叶，随随便便，正如一句古老的葡萄牙言语所言：“人日损之，神夜补之。”

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But even if that turns out to be too optimistic, both theory and evidence make it reasonable to expect a significant discount from the sticker price.

但是，虽然事情看起来很乐观，现有的理论和证据还是预示着税收收入将有较大幅度的下降。

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For now, they're getting a glimpse through movie trailers that have left them both optimistic and angry, and wondering to what extent the new Tonto portrays actual American Indians.

NPR: Will Disney's New Tonto Be Any Better?

According to Emanuel, tailoring medical treatments to individual characteristics of each patient is both overly optimistic and cost-prohibitive.

CNN: Is personalized medicine a myth?

This strikes me as both too optimistic and too pessimistic.

ECONOMIST: European politics