I cannot think that in these few sentences I have succeeded in painting a clear picture of the principles and purposes of psycho-analysis.

我不认为这简短的几句话就能成功地描绘出精神分析的原则和目的的清晰图像。

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The principles and purposes of developing integrable courseware system are put forward from the point of software reuse, and the key technology for realizing this system is provided.

从软件重用的观点出发，提出了集成式课件系统的开发思路和目标，并给出了系统实现的关键技术。

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The North Atlantic Treaty begins with the affirmation that its parties "reaffirm their faith in the purposes and principles of the Charter of the United Nations."

《北大西洋公约》以公开肯定其成员“重申其对《联合国宪章》的目的以及原则的信念”开头。

《柯林斯英汉双解大词典》

The processes of promoting and protecting human rights should be conducted in conformity with the purposes and principles of the Charter of the United Nations, and international law.

UNESCO: Vienna Declaration and Programme of Action

In the framework of these purposes and principles, the promotion and protection of all human rights is a legitimate concern of the international community.

UNESCO: Vienna Declaration and Programme of Action

These rights and freedoms may not be exercised contrary to the purposes and principles of the United Nations.

UNESCO: Vienna Declaration and Programme of Action