原理 yuán lǐ 🔊 principle HSK 6 + Review this word Meanings yuán lǐ principletheory Its characters 原yuánformerHSK 5理lǐtextureHSK 6 Words with 原理 基本原理 jī běn yuán lǐ fundamental principle 变分原理 biàn fēn yuán lǐ variational principle (physics)