肯塔基大学心理学教授苏珊娜·塞格斯特罗姆认为，增加乐观情绪的关键在于培养乐观行为而不是积极思维。

Suzanne Segerstrom, professor of psychology at the University of Kentucky, believes that the key to increasing optimism is through cultivating optimistic behaviour, rather than positive thinking.

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尽管遇到许多的困难，父亲依然非常积极乐观地对待生活。

Though he has met many difficulties, my father is still very positive about life.

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他正直、乐观向上、积极进取。他一生都在追求真、善、美，一生都在追求理想的社会。

He is upright, optimistic, active and enterprising, striving for truthfulness, kindness and beauty, and seeking for an ideal society all his life.

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On the one hand, the optimists might say, "Even when we throw in the extra interaction effects, even the negative interaction effects, the overall nature of the human condition is positive.

一方面，乐观主义者可能说，“就算我们把另外的相互影响，就算把负面的相互影响算进去，人类处境的总体本质还是积极的。

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Well, sort of upbeat, positive.

一种乐观,积极

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