a metallic sound的用法和样例：
- A healthy tooth percussed with a metal instrument gives a metallic sound.
- A loud, resonant, metallic sound.
- It consisted of a multitude of dull scratches which produced a metallic sound, as if claws and teeth were gnawing at the copper wire.
- A single light metallic sound,as of a small bell.
- A single light metallic sound, as of a small bell.