dìng​lǜ

scientific law

定律 dìng​lǜ
scientific law noun
A scientific law or established rule; a statement describing phenomena that has been proven through observation or experiment.
general rule
A fixed rule or generalization about human behavior or nature.
to establish laws
To formulate or establish laws and regulations.

Frequency

Movie subtitles
3.52 per million appears in 1% of films
Written text
7.85 per million

Sources