rudiment
n. 初步；初级；发育不全的器官
sp. (复数）rudiments: 基本原理； 初级阶段.
形容词：rudimental
近义词：groundwork，basis，foundation，origin，beginning，seed，constituent，ABC's，alphabet，ABC，
英英释义
Noun
- the elementary stages of any subject (usually plural);
"he mastered only the rudiments of geometry"
- the remains of a body part that was functional at an earlier stage of life;
"Meckel's diverticulum is the rudiment of the embryonic yolk sac"
例句
用作名词(n.)
- It does not take me long to pick up the rudiment of the language.我没有费多少时间就学会了这一语言的初步知识。