rationalistn.纯理论者；理性主义者rationaladj.合理的；理性的；能推理的n.有理数rational authority理性权威rational mechanism理性机制rational esthetics理性美学rational drug uses合理用药Rational screening理性筛选rational treatment合理疗法rational character有理特征标rational principle唯理的基质rational S-patch有理S曲面片rational cognition理性认识