
好词典

源自 'poly-'(多)和 'ethylene'(乙烯),指由乙烯聚合而成的材料。
❶ 一种轻质、柔韧的塑料材料,常用于制作袋子、包装膜等日常用品,化学成分为聚乙烯。
“She wrapped the sandwiches in polythene to keep them fresh.”
(她用聚乙烯薄膜包住三明治以保持新鲜。)
“The supermarket provides polythene bags for customers.”
(超市为顾客提供聚乙烯塑料袋。)
polythene bag — 指用聚乙烯材料制成的袋子,常用于购物或包装物品。
“He carried his groceries in a polythene bag.”
(他用聚乙烯袋子装着杂货。)