内分泌系统 nèifēnmìxìtǒng endocrine system Definitions Defs Origin Strokes Stroke Words Sentences Sents 内分泌系统 內分泌系統 nèifēnmìxìtǒng endocrine system The system of ductless glands that secrete hormones directly into the circulatory system to regulate body functions
内分泌系统 內分泌系統 nèifēnmìxìtǒng endocrine system The system of ductless glands that secrete hormones directly into the circulatory system to regulate body functions
