polyethylene
noun [ U ] US uk/ˌpɒl.iˈeθ.əl.iːn/ us/ˌpɑː.liˈeθ.ə.liːn/ (also mainly UK polythene)
聚乙烯
a light, usually thin, soft plastic, often used for making bags or for keeping things dry or fresh
a polyethylene bag 聚乙烯塑料袋
They covered the broken windows with sheets of polyethylene. 他们用塑料薄膜把打坏的窗户挡起来。