copying paper 【化】 复写纸
Copying \Cop"y*ing\, a. & n.
From {Copy}, v.
{Copying ink}. See under {Ink}.
{Copying paper}, thin unsized paper used for taking copies of
letters, etc., in a copying press.
{Copying press}, a machine for taking by pressure, an exact
copy of letters, etc., written in copying ink.