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spring binder /ˈspɹɪŋ ˈbaɪndə/ n

中文：弹簧活页夹

中文 · 弹簧活页夹Español · carpeta de costilla de resorteFrançais · reliure à ressort
Meaning：Binder in which sheets of paper are held in place by the pressure of springs.
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Filing supplies

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