大键架

例句：

1. 1. The grand piano is placed on a grand piano stand.
   大钢琴放在一个大钢琴架上。
2. 2. The violinist needs to practice her violin on the grand piano.
   小提琴手需要在大钢琴上练习她的小提琴。
3. 3. The concert hall was decorated with grand pianos and violins.
   音乐会厅装饰着大钢琴和小提琴。