Punched pocket

A punched pocket (UK English), polypocket (UK English slang), slippery fish (UK English slang), sheet protector (US English), or sometimes perforated document bag is a flat, slitted plastic bag with a perforated edge used to hold paper documents, originally created in 1986 by Mike Townsend.

单词	Sheet protector
释义	Sheet protector 英语百科 Punched pocket A punched pocket (UK English), polypocket (UK English slang), slippery fish (UK English slang), sheet protector (US English), or sometimes perforated document bag is a flat, slitted plastic bag with a perforated edge used to hold paper documents, originally created in 1986 by Mike Townsend.
随便看	colony inhibition colony inhibition factor colony inhibition test colony inhibitory factor Colony,Leper colony lift colony microscope colony microstructure colony odor colony promoting activity colony promoting factor colonyscope colony settlement colony stimulating activity Colony stimulating factor Colony stimulating factor 1 colony stimulating factor, CSF Colony Stimulating Factor,Granulocyte Macrophage Colony Stimulating Factor,Macrophage Colony Stimulating Factor,Mast Cell Colony Stimulating Factor,Multipotential Colony stimulating factor receptor Colony Stimulating Factor Receptors Colony stimulating factors colony stimulating factors receptor

Sheet protector

Punched pocket