N-COUNT [usually singular]（要人、报社、电视台或广播公司收到的）公众来信 The letters that are received by an important person, a newspaper, or a television or radio company can be referred to as the postbag. （要人、报社、电视台或广播公司收到的）公众来信 [mainly British, journalism]
Here's another selection of recent letters from our postbag.
这是我们从近期公众来信里挑选出的又一批信件。
Marling's article on Northumbria attracted a large postbag.