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The cell phone ban went into effect in 1991, mostly to eliminate the possibility that cell phone calls on airplanes would interfere with cell conversations on the ground, as well as with the airplanes radio communications. |
中文意思: “手机上不准打电话从1991年开始执行,最大的原因是,要消灭手机信号对飞机跟地面通讯的干扰,以及飞机的无线电通讯。 |
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