maintain principles with flexibility ? 那位特使～，順利完成了使命。The special envoy maintained principles with flexibility,and completed his mission satisfactorily.
守經(jīng)達權(quán)shǒu jīnɡ dá quán
守：遵守；經(jīng)：常規(guī)，原則；達：通曉；權(quán)：權(quán)宜，靈活。指辦事既堅持公道，又能靈活應(yīng)付。maintain principles with flexibility, hold right principles, but act according to circunstances