Bch
abbr. 广播信道（Broadcast Channel）
🗣️ 情景例句
Well, maybe you could come next week sometime.
那样的话，也许你可以在下个星期的某个时候来。
What is the total circulation of this newspaper.
这家报纸总发行量多少？
Jiang Honglin was catching up fast, too, but not fast enough.
江红林也在奋力追赶，但他跑得不够快。