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轻盈的手柄可长时间操作而不感疲劳。
Light handle allowed long time working without fatigue.
youdao
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长时间的学习也很容易引起眼睛疲劳。
Studying for a long time can also cause eyestrain.
youdao
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长时间的工作使我疲劳。
The long hours of work have wearied me.
youdao
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长时间的工作使我疲劳。
The long hours of work have wearied me.
youdao