pure pitch

例句：

1. 1. The violinist plays a beautiful piece of musicwith a pure pitch.
   小提琴手演奏了一首纯音调的音乐。
2. 2. The singer's voice has apure pitch that is hard toreplicate.
   歌手的声音具有一种难以复制的纯音调。
3. 3. The piano player needs tohave a pure pitch to play the pianowell.
   钢琴家需要有纯音调才能弹好钢琴。