1. But Drew wasn't done. In 1930, he created a see-through, water-proof (防水的), cellophane (薄膜) adhesive (胶粘剂).
    但是，德鲁并没有就此满足。1930零年，他发明了一种透明、防水的薄膜胶粘剂。

2. When used as-a wrapper, cellophane lets the purchaser see the content of the package.
    用玻璃纸包装使购买者能看到包裹内的物品。