聚乙烯

例句：

1. 1. The plastic bag is made from polyethylene.
   这个塑料袋是用聚乙烯做的。
2. 2. Polyethylene is a type of plastic that is commonly used for packaging.
   聚乙烯是一种常见的塑料，常用于包装。
3. 3. The polyethylene lining in the storage tank is waterproof and durable.
   储罐内的聚乙烯衬里是防水且耐用的。