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钢琴的表现力是不断发展着的,是经过无数次改良才获得的。这一具有丰富表现力的乐器,可以弹奏出响亮的和微弱的声音,还可以演奏出强烈的与柔和的音
The performance of the piano is constantly evolving, obtained through numerous improvements. This richly expressive instrument can play loud and faint sounds and can play strong and soft tones