Research shows that it takes "about ten years, or ten to twenty thousand hours of deliberate practice" to become an "expert."

研究表明，要成为一名“专家”，需要花费10年，或者10000到20000小时的刻意练习时间。

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Moreover, every top professional Starcraft player lives in a dedicated gaming house where they practice ten or more hours a day.

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In his book Outliers, Malcolm Gladwell suggests that it takes 10, 000 hours (or at least ten solid years) of practice to achieve mastery in most fields.

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