piano whine

例句：

1. 1.The pianist played a beautiful piece of music on the piano.
   那位钢琴家在钢琴上演奏了一首美妙的音乐。
2. 2.He often complains about his job and its stress.
   他经常抱怨他的工作及其压力。
3. 3.The old man sat in silence, occasionally whining softly to himself.
   老人默默地坐着，不时地低声自语。