以下为句子列表：
英文: Soon Marconi's own spark-gap transmitters are sending Morse-code pulse streams across his lab without wires.
中文: 不久，马可尼自制的火花放电发送机，就能以无线的方式在实验室里传送摩斯电码脉冲流了。
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英文: Using his spark-gap transmitter, a mild-mannered 31-year-old physics professor demonstrates electromagnetic phenomena to students in a dimly lit classroom at the University of Karlsruhe in Germany.
中文: 德国卡斯鲁大学灯光昏暗的教室里，一位温文儒雅的物理学教授，利用火花放电发送机，向学生示範电磁现象。
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