Need is the source of psychological force which drives man's activities.

人的一切活动都有其心理动力驱动，而需要是心理动力的源泉。

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Transpersonal psychology is claimed the Fourth Force in psychological circles, which emphasizes spirituality.

超个人心理学自称是心理学界的第四势力，它的核心是重视精神性。

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Objective To observe the effects of psychological rehabilitation on the puerperal force of puerperant.

目的观察心理康复干预对产妇产力的影响。

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By declaring his commitment finite, he removes the psychological force from his surge.

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But a report released by a zero-tolerance task force assembled and published by the American Psychological Association in 2008 concluded there was no evidence that these measures were effective in making students and staff feel safer.

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Not that the two forms produce identical results, which is why the comparison was intriguing: what as operas the plays lost in psychological sublety and argumentative content, they gained in emotional force.

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