carbon paper
US /ˈkɑːr.bən ˌpeɪ.pər/
UK /ˈkɑːr.bən ˌpeɪ.pər/

1.
kertas karbon
a thin paper coated with a waxy pigment, used for making a copy of a document as it is being written or typed
:
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She used carbon paper to make a duplicate of the invoice.
Dia menggunakan kertas karbon untuk membuat salinan invois.
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Old typewriters often required carbon paper for copies.
Mesin taip lama sering memerlukan kertas karbon untuk salinan.