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英语翻译Greek soldiers sent messages by turning their shields to

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/04/30 15:06:53
英语翻译
Greek soldiers sent messages by turning their shields toward the sun.The reflected light could be seen several miles away.The enemy did not know its meaning,but other Greek soldies could understand the messages.Roman soldiers in some places built long rows of signal towers.When they had a message to send,the soldiers shouted from tower te tower.If there were enough towers and enough soldiers with loud voice ,important news could be sent quickly over distance.In Africa,people learned to send messages by beating on a series of large drums.Each drum was kept within hearing distance of the next one.The drum beats were simple,they could be sent at a great speed for hundreds of miles.In the eighteenth century,a Fench engineer found a new way to send short messages.In this way,a person held a flag in each hand and the arms were moved to different positions.It was like spelling out words with flags and arms.Over a long period of time,people sent messages by all these different ways.However,nowdays people can send speech sounds over a great distance in just a few seconds because of the invention of the telephone in America in the nineteenth century.
希腊士兵通过将他们的盾牌正对着阳光来传达信息.反射的光可以在几英里外看到.敌方不知道其中的意思,但是其他的希腊士兵能够理解其暗意.罗马士兵在有些地方设立长列的信号台.当有信息要发出的时候,士兵们就一个台接一个台的呼喊.如果有足够的台和足够的大嗓音士兵,重要的消息跨越很远的距离也能很快的传递出去.在非洲,人们学会了通过击打一系列的大鼓来传达消息.每个鼓的声音都保持在到达下一个鼓声的距离之内.击鼓很简单,并且可以迅速的传递数百里.在十八世纪,一个法国工程师发现了一个新的方法传递简短消息.在这个方法当中,一个人两手各持一面红旗,手臂移动至不同的位置.这就像是通过红旗和手臂来表达不同信息.在很长的时间里,人们都是通过这些不同的方法来传递消息.然而,由于十九世纪美国发明的电话,当代人们可以在仅仅几秒钟内将话语传达到很遥远的地方.