We don't even think about how—it's the natural behavior of tables.

做到这一点我们甚至不用去想怎么做–表格天生就是如此。

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It is regarded as a natural behavior that a man helps the old down stairs.

帮助老人下楼被认为是理所当然的行为。

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It is regarded as a natural behavior that a man helps the old go downstairs.

帮助老人下楼被认为是理所当然的行为。

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And in fact, Skinner explicitly made the analogy from the natural selection of species to the natural selection of behavior.

实际上，斯金纳也确实明确地,对物种的自然选择,同行为的自然选择进行过类比。

耶鲁公开课 - 心理学导论课程节选

Your natural defenses that might provide some kind of a buffer between a commercial message and your behavior, you have a filter, a screen that helps you interpret these message.

人天生的防御心理能够,为商业信息和人类行为之间提供缓冲,电视屏幕像一个过滤器那样,隔离了人和商业信息

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Over four centuries of scientific progress have convinced most professional philosophers and scientists of the validity of naturalism: the view that there is only one realm of existence, the natural world, whose behavior can be studied through reason and empirical investigation.

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But I have yet to see any biological study that even demonstrates that maternal behavior as being natural in most females outside of their own families.

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Regardless of rising prices, people who eat natural food are unlikely to change that behavior, as it is a lifestyle choice, according to Wolf.

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