Nuclear weapons seem to violate the just war principle of proportionality.

核武器似乎违背了罚当其罪的正义战争原则。

《柯林斯英汉双解大词典》

The IAALS wants stronger enforcement of the principle of proportionality.

该协会要求加强执法的比例原则。

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The principle of proportionality is an important principle in administrative law of the developed countries, especially of the nations and districts of continental law system.

比例原则是发达国家，特别是大陆法系国家和地区行政法领域的一项重要原则。

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The ATTP then goes on in Paragraphs 1-5 through 1-11 to explain the requirements of the law of armed conflict, the principle of military necessity, the principle of distinction, the principle of proportionality, and the principle of humanity.

FORBES: More on Preventing Harm to Civilians

He addresses such questions as: May a State ever respond to a computer network attack by exercising a right of national self-defense? and: Must attacks adhere to the principle of proportionality?

FORBES: Pace of US Cyber-Preparedness Accelerating