Ensure words are spelled correctly. Try rephrasing keywords or using synonyms. Try less specific keywords. Make your queries as concise as possible.

Ensure words are spelled correctly. Try rephrasing keywords or using synonyms. Try less specific keywords. Make your queries as concise as possible.

电报是将信息以电信号发送，用编码把文字“藏”在信号里。“滴滴答答”长短不一的信号代表不同的字母和数字，接收方把这些信号“翻译”回原本的信息。例如“2635 1558”代表的就是“杭州”。 目前，仅北京、杭州可提供发报服务，可收件区域主要是北京 ...