manilla paper [纸] [电] 马尼拉纸
If you do this the inside cover of your paper will be smooth, if you don't there is a chance there will be a line resulting from the edge of the manilla.
如果你做了这一步，封面内侧会比较平整。
youdao
Tag paper: a very strong manilla, some almost untearable, generally made from rope stock.
标签纸：十分结实的马尼拉纸，一些简直不能撕开。
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