(pos:名詞) <explanation> yue:用嚟保護書面嘅塑膠包裝(量詞:塊/ 層/卷) eng:plastic film used to wrap book covers for protection <eg> yue:就嚟開學喇,你買咗包書膠未呀? (zau6 lai4 hoi1 hok6 laa3, nei5 maai5 zo2 baau1 syu1 gaau1 mei6 aa3?) eng:School is starting soon, have you bought covering plastic for your books yet?