Bch
abbr. 广播信道（Broadcast Channel）
🗣️ 情景例句
How big is your family?
你家有几口人？
I'm going to show him how to speak English.
我正要指点他如何讲英语。
At that time, gold was discovered in California and thousands of people rushed there to look for gold.
当时有人在加利福利亚发现了黄金，于是成千上万的人涌到那里去寻找金子