Piano is very difficult,
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送交者: techie 于 2006-07-21, 14:26:20:
回答: 中土人的钢琴情结 由 true 于 2006-07-21, 11:21:56:
On average it takes around 10,000 hours of practice to become an accomplished pianist. Let's say a kid plays three hours a day 7 days a week. It would take her almost ten years to be a virtuoso in piano.
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