selectionistn.自然选择论者selectionn.选择；挑选；挑选出来的人或事selection of activated sludge污泥选择selections from introductions从引种中选择出来selection of tubular products管材选用Selection of leading industry主导产业选择selection of medical students医学生选拔Selection of accounting firms会计师事务所选择Selection of forage varieties牧草筛选selection for optimal routing最优路径选择selection of forecast factors预报因子选择Selection-and-appointment选拔任用