a loud and clear sound的用法和样例：
- It was commissioned with the opening of the mall in 1985 but the powertrain is of the 1970s design, with a loud and clear sound of the relay switchbox operation on startup and stopping.
- What a loud and clear high pitch he has!
- The loud and clear sound in directs in the hall to reverberate.
- In order to have a loud and clear name, she plans to rename herself.