[yuán lǐ]
principle; tenet; axiom; theory
a cardinal principle
根本的原理
fundamentals of mathematics
数学的基本原理
develop the theory of ...
详述 ... 的原理
apply the principles of science for the good of mankind
运用科学原理造福人类
These machines work on the same principle.
这些机器按照相同的原理运转。