rudiments

名词 rudiments:

1. a statement of fundamental facts or principles
   同义词：basics

名词 rudiment:

1. the elementary stages of any subject (usually plural)
   同义词：rudiment, first rudiment, first principle, alphabet, ABC, ABC's, ABCs
2. the remains of a body part that was functional at an earlier stage of life
   同义词：rudiment

1. I have mastered the rudiments of economics.
   我已精通经济学的基本原理。