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在无线电通讯技术未被使用之前,人们曾用过鸽子来传递书信。古时候,要想到遥远的他乡去旅行或工作,两地之间没有什么邮信的机构,人们可以把饲养好的鸽子带上,到了目的地后,鸽子便会
People used pigeons to send letters before the radio was unused. In ancient times, to travel or work in a remote country, there was no post office between the two places. People could bring their reared pigeons to the destination and the pigeons would