这所学校的试卷来时都打好了孔，以便于装订。
This school paper comes provided with holes already punched in it, to fit into the binders.
钻孔：在一堆纸一打孔，以作特别装订，如活页装等。
Drilling: Perforating a pile of sheets with holes for special binding methods, such as loose-leaf.
钻孔：在一堆纸一打孔，以作特别装订，如活页装等。
Drilling: Perforating a pile of sheets with holes for special binding methods, such as loose-leaf.
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