名詞 principle:

1. a basic generalization that is accepted as true and that can be used as a basis for reasoning or conduct
   同義詞：principle, rule
2. a rule or standard especially of good behavior
   同義詞：principle
3. a basic truth or law or assumption
   同義詞：principle
4. a rule or law concerning a natural phenomenon or the function of a complex system
   同義詞：principle, rule
5. rule of personal conduct
   同義詞：principle, precept
6. (law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature)
   同義詞：rationale, principle