他还能通过镜子发送许多信号.他通常使用镜子来警告某人正处于危险.或者他试图得到远处的人的注意.但是他也发送密码信息.当然,镜子只能在太阳光线强的情况下使用.晚上,印度人使用火来发送信号.
有一个印第安人还通过烟来发送信号.他用干柴起了一堆小火.然后他把树枝绿草放在火上面.他在火上盖一跳毯子,一分钟后从火上拿走毯子,就有一团烟雾.烟雾的数量是他想传递的信息的密码.
现在你知道了印第安人不需要学习对方的语言.他们能够通过使用信号和符号语言来互相交流.
英语翻译He could also send many signals with a mirror.He usually
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