The main weapon in their traditional Arsenal - the 30-second network television commercial - is losing its punch.
作为它们传统兵器库中的主要武器，30秒电视广告正逐渐丧失威力。
As one of the main weapon and the information resources in the modern air-defence system, the viability of antiaircraft radar on the ground is confronted with serious threats.
地面防空雷达作为现代防空体系的主战装备和主要信息源之一，它的生存性面临着严重的威胁。
As one of the main weapon and the information resources in the modern air-defence system, the viability of antiaircraft radar on the ground is confronted with serious threats.
地面防空雷达作为现代防空体系的主战装备和主要信息源之一，它的生存性面临着严重的威胁。
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