APP n. a standard size of paper in the EU(European Union), which is 21 centimetres by 29.7 centimetres A4 号纸......（本文共 86 字） [阅读本文] >>
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n. a standard size of paper in the EU(European Union), which is 21 centimetres by 29.7 centimetres A4 号纸......（本文共 86 字） [阅读本文] >>
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