basis
英 ['beɪsɪs]
美['besɪs]
	    - n. 基础;底部;主要成分;基本原则或原理
 
英英释意
- 1. a relation that provides the foundation for something;
 - "they were on a friendly footing"
 - "he worked on an interim basis"
 
- 2. the fundamental assumptions from which something is begun or developed or calculated or explained;
 - "the whole argument rested on a basis of conjecture"
 
- 3. the most important or necessary part of something;
 - "the basis of this drink is orange juice"