The study or use of medicinal herbs to prevent and treat diseases and ailments or to promote health and healing.药草医术学：研究或是利用具医学功能的药草来预防及治疗疾病与病痛，或是促进身体健康并具治疗功能
A drug or preparation made from a plant or plants and used for any of such purposes.药草：以一种或多种植物所制作的医药或是调剂，并以任何此类目的使用