劍橋詞典a light , usually thin , soft plastic , often used for making bags or for keeping things dry or fresh 聚乙烯 a polythene bag 聚乙烯塑料袋 They covered the broken windows with sheets of polythene. 他們用塑料薄膜把打壞的窗戶擋起來(lái)。 返回 polythene