第四，表现观念真实。

Second, expressing the truth of feeling.

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尽管这些社会价值观念真实存在，但它们都基于保障人类基本生存所需的神经系统不断的进化和调节。

Social values, real as they are, depend on an evolutionary modification of the neural circuitry involved in basic survival.

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在一块被设计得像哥本哈根街道的地方骑自行车，不仅能让游客体验根本哈根的真实城市生活，还可以宣传环保观念。

Riding a bike through an area which is designed like Copenhagen streets will not only evoke the real Danish lifestyle in the capital city, but also promote environmentally friendly concepts.

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