单词	a dusky frown
释义	a dusky frown 愁眉不展
随便看	transom window light transom windows transon Transonabuoy Automatic Weather System transonance transonances transondent transonic transonic acceleration transonic aerodynamic characteristic transonic aerodynamic characteristics transonic aerodynamics transonic aircraft Transonic Aircraft Technology transonic airfoil transonically transonic area law transonic area rule Transonic Armament Technology transonic axia flow compressor rotor Transonic axial compressor transonic axial flow compressor transonic barrier transonic blade transonic blading