1. 岗位和电报局   channel   post and telegraph office   telegram   picture   Hint Half-n-half Clue   2. 渠道   telex   script   modem   channel   Half-n-half Clue   3. 激光打印机   radio broadcasting   post box, mail box   laser printer   public telephone   Half-n-half Clue   4. 航寄   laser printer   post box, mail box   telecommunication satellite   airmail   Half-n-half Clue   5. 信箱   news bulletin   televiewer   script   letter box   Half-n-half Clue   6. 表达登记   express registered   script   telecommunication satellite   voice-mail   Half-n-half Clue   7. 电子邮件   e-mail   channel   letter box   post box, mail box   Half-n-half Clue