paper skin

例句：

1. 1. Thepaper skin of the book is peeling off.
   书的纸皮正在剥落。
2. 2. The car was wrapped in a thickpaper skin.
   这辆车被厚厚的纸皮包裹着。
3. 3. The new design uses a moresustainable material for its paper skin.
   新设计使用了更可持续的材料作为其纸皮。