1scientific law (e.g. law of conservation of energy)
2(in human affairs) a generalization based on observation (e.g. "power corrupts")
Examples
méi没yǒu有rèn hé任何shì wù事物néng能táo逃tuō脱mò墨fēi菲dìng lǜ定律。
没有任何事物能逃脱墨菲定律。
Nothing is exempt from Murphy's Law.
对马尔萨斯虚构的「土地耗尽」定律最有力的反驳，是苏联集体农场的时间。
The best refutation of the imaginary Malthusian laws of "land depletion" is the practice of Soviet collective farming.