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即使是最好的设计椅子不会坏姿势了。姿势不正确，是许多物理问题的根源。因此，坐端正，不要含糊。你的背部要伸直，以支持你的身体上部。
— Mastering Computer Typing (1995) (掌握电脑打字（1995）)
 (book)
by Sheryl Lindsell-Roberts
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| Language: | Chinese |
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| Avg. speed: | 60 WPM |
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| Avg. accuracy: | 69.0% |