自从九岁起我一直在学弹钢琴的翻译：Since the age of nine I have been learning to play the piano 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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Since the age of nine I have been learning to play the piano

Since nine year old of me continuously in study ball piano

Since 9 years old I have been playing the piano in school

Since the age of nine I have been learning to play the piano