adj.初步的，基本的，[化]元素的，自然力的

英文释义

a. Having only one principle or constituent part; consisting of a single element; simple; uncompounded; as, an elementary substance.

a. Pertaining to, or treating of, the elements, rudiments, or first principles of anything; initial; rudimental; introductory; as, an elementary treatise.

a. Pertaining to one of the four elements, air, water, earth, fire.

词干

elementary 基本的，自然力的
→ 来自element， 基础，基本。