Bch
abbr. 广播信道（Broadcast Channel）
🗣️ 情景例句
We must.
我们是该开始了。
Won't you be embarrassed to leave the party early?
你提早一点离开宴会也无妨吧？
The girl asked to see a timetable, feeling sure that her father could not have made such a mistake.
姑娘要求看到时刻表，因为她相信父亲不能把这么大的事弄错。