required词根词缀解析:前缀re-加强意义+词根-quir-寻求+后缀-ed,过去式形式结尾。v.需要;依靠;依赖;使做(某事);使拥有(某物);(尤指根据法规)规定;例句Sports Physiology is a required basic theory course in physical education colleges.《运动生理学》是体育院校学生必修的基础理论课。