通信 communication; communicate by letter; correspond 通信处 mailing address; 通信员 messenger; orderly; 我们好久没有通信了。 we haven't corresponded for a long time. 我们之间的通信只限于几封商业函件。 our correspondence is limited to a few commercial letters.; 通信保密 communication security; 通信保障 communication support; 通信鸽 carrier pigeon; homing pigeon; 通信工程 communication engineering; 通信联络 signal communication; 通信频带 [讯] communication band; 通信犬 messenger dog; 通信卫星 communication satellite; radio relay satellite; [航空] relay satellite