a clear voice的用法和样例：
- A well-spun tale, a ready wit and a clear voice.
- With each member of it having a clear voice.
- He called out my name in a clear voice.
- A loud voice cannot compete with a clear voice, even if it's a whisper.
- Then thumbling was so alarmed that he cried out in a clear voice, let me out first, I am sitting inside her.