求翻译：现代钢琴因形状和体积的不同，主要分为立式钢琴和三角钢琴。三角钢琴主要用于音乐会，在交响乐中充当重要角色。立式钢琴比较小，比较便宜，一般用于家庭。是什么意思？

Modern piano by the different shape and size, divided into vertical pianos and grand pianos. Mainly used in concert grand piano, to play an important role in the symphony. Vertical Piano is small, relatively inexpensive, generally used for the family.

Because modern piano shapes and sizes of different and is divided into 3 vertical piano and piano. 3 piano mainly used for concerts, the symphony serves as an important role. Vertical piano is small, and are relatively inexpensive, and generally used for Family.

The modern piano because of the shape and the volume difference, mainly divides into the vertical piano and the triangle piano.The triangle piano mainly uses in the concert, plays the strong character in the symphony.The vertical piano quite is small, quite cheap, uses in the family generally.

Modern piano shape and volume of different, are divided into upright piano and grand piano. Grand Piano mainly used for concerts, plays an important role in Symphony. Upright piano is smaller and cheaper, generally used for the family.

Modern piano shape and volume of different, are divided into upright piano and grand piano. Grand Piano mainly used for concerts, plays an important role in Symphony. Upright piano is smaller and cheaper, generally used for the family.