These are requirements of relationships between individuals as well as a fundamental of law.

这些是人际关系的准则，也是法律的基础。

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The law of the unity of opposites is the fundamental law of the universe.

对立统一规律是宇宙的基本规律。

《新英汉大辞典》

Independence and sovereign equality among states is a fundamental principle of international law.

国家间的独立和主权平等是国际法的一项基本原则。

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And so the next thing you do is you call up a journal and say I've discovered a fundamental law of nature.

下一步你做的事是打电话给一个杂志,并宣称你发现了一条自然界的基础定律。

麻省理工公开课 - 热力学与动力学课程节选

The first and most fundamental law of nature, he says, is to seek peace and follow it.

第一条也是最根本的的一条自然法就是，去寻求和平并且沿袭下去。

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"It guarantees the right to due process of law, a fundamental principle of international criminal law, " Ms Fernandez said.

BBC: Amia bombing: Argentina and Iran agree truth commission

On Monday, Argentine President Cristina Fernandez de Kirchner called the agreement to set up a judicial commission "historic", saying it guaranteed "the right to due process of law, a fundamental principle of international criminal law".

BBC: Amia bombing: Israel condemns Argentina-Iran probe

Respect for human rights and for fundamental freedoms without distinction of any kind is a fundamental rule of international human rights law.

UNESCO: Vienna Declaration and Programme of Action