upright piano

例句：

1. 1.The upright piano is a popular choice for beginners.
   直立式钢琴是初学者的热门选择。
2. 2.The upright piano has a beautiful sound and is easy to play.
   直立式钢琴声音优美，易于演奏。
3. 3.The upright piano is often used in concert halls and music schools.
   直立式钢琴常用于音乐厅和音乐学校。