rationallyadv.理性地rationaladj.合理的；理性的；能推理的n.有理数rational managers理性管理者rational subgroup有理子群rational homotopy有理同伦Rational drug use合理用药rational contract理性契约rational distance空间距离rational observer理性的观察家rational planting合理种植rational evidence合理的证据rational functionn.[数]有理函数