channel cast

例句：

1. 1.The news channel is broadcasting live from the event.
   新闻频道正在现场直播。
2. 2. He used to be a professional musician, but now he's a songwriter and performer.
   他以前是一名职业音乐家，但现在他是作词家和表演者。
3. 3. She decided to switch to a different channel for her favorite show.
   她决定换到另一个频道看她最喜欢的节目。