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人体工学设计当长时间阅读,人们自然转移阵地频繁。
Ergonomic Design When reading for long periods of time, people naturally shift positions often.
youdao
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人体工学设计当长时间阅读,人们自然转移阵地频繁。
Ergonomic Design When reading for long periods of time, people naturally shift positions often.
youdao