1·As an additional safeguard against weeds you can always use an underlay of heavy duty polyethylene.
作为另外一种预防杂草的防护措施，你可以一直使用一层厚重耐磨的聚乙烯底垫。
—— 《柯林斯英汉双解大词典》
2·Polyethylene (PE) model of spin one-time molding process autopoietic.
聚乙烯（PE）旋塑成工艺一次性模式成型。
3·This order shall be packed in cartons with polyethylene tops.
这批货的包装是用顶部带有聚乙烯的纸箱。
4·Low density polyethylene makes a nice substitute for PVC. It has a simple makeup and doesn't require additives to make it soft and pliable.
低密度的聚乙烯是PVC很好的替代品，它的生产过程相对简单，也不需要添加化学物质增加柔软性。
5·So more's the pity that FIFA has not encouraged South Africa to replace the hardy Kikuyu turf intended for next year's World Cup with two-star polyethylene pitches instead.
遗憾的是国际足联并未鼓励南非将用于明年世界杯比赛耐旱的基库尤草坪替换为二星级的聚乙烯草坪。