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polythene (material noun)
polythene 通常作不可数名词，不加 a/an。
Polythene is widely used in packaging.
聚乙烯广泛用于包装。
聚乙烯
先理解核心含义，再看它在真实句子里的用法。
聚乙烯
polyethylene
Polythene is widely used in packaging.
聚乙烯广泛用于包装。
聚乙烯
Synonym of polyethylene.
一种轻质热塑性塑料；特别用于包装和绝缘
a lightweight thermoplastic; used especially in packaging and insulation
The sandwiches were wrapped in a sheet of polythene to keep them fresh.
三明治用一块聚乙烯薄膜包着，以保持新鲜。
Please put the old newspapers into a polythene bag before throwing them away.
请把旧报纸放进聚乙烯袋里再扔掉。
Workers covered the furniture with polythene while the room was being painted.
粉刷房间时，工人们用聚乙烯罩住家具。
polythene 通常作不可数名词，不加 a/an。
Polythene is widely used in packaging.
聚乙烯广泛用于包装。
表示“由聚乙烯制成”时常用 made of polythene。
The bags are made of polythene.
这些袋子是聚乙烯做的。
polythene bag 是常见搭配，指聚乙烯塑料袋。
She packed her lunch in a polythene bag.
她把午餐装进一个聚乙烯袋里。
sheet 用于表示一片或一张聚乙烯薄膜。
Cover the plants with a sheet of polythene.
用一块聚乙烯薄膜盖住植物。
Not this
Please give me a polythene to keep the food fresh.
Use this
Please give me a polythene bag to keep the food fresh.
polythene 是物质名词，通常不可数，不能用 a polythene 直接表示“一个塑料袋”；需后接 bag 等量词。
Not this
This bottle is made by polythene.
Use this
This bottle is made of polythene.
表示“由某材料制成”应用 made of，而 made by 用来引出制造者或方式，不能接材料。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
聚乙烯袋
She packed the sandwiches in a polythene bag.
她把三明治装进聚乙烯袋里。
聚乙烯薄膜
Cover the plants with a polythene sheet to protect them from frost.
用聚乙烯薄膜覆盖植物以防霜冻。
聚乙烯保鲜膜
He covered the bowl with polythene wrap before putting it in the fridge.
他把碗用聚乙烯保鲜膜盖好后再放进冰箱。
聚乙烯包装
The fragile items were shipped in polythene packaging.
这些易碎品用聚乙烯包装运输。
聚乙烯内衬
The bin has a polythene liner for easy cleaning.
垃圾桶内有聚乙烯内衬，便于清洁。
甲壳虫乐队《Abbey Road》专辑中《Polythene Pam》的歌词。Polythene 意为“聚乙烯”，Polythene Pam 是歌中一个穿聚乙烯塑料衣的女孩。
The Beatles had a hit song called 'Polythene Pam', which made the word polythene famous in pop culture.
甲壳虫乐队有一首名为《Polythene Pam》的热门歌曲，这让 polythene 一词在流行文化中广为人知。
Use polythene naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：聚乙烯薄膜袋轻得透明，提在手里几乎没分量——polythene 就是这种塑料。
语域：neutral 常见场景：packaging materials、household storage、industrial insulation polythene 是英式英语中表示“聚乙烯”的常用词，语气中性，在日常口语和书面语中都比较常见，多用于包装袋、保鲜膜、管道等塑料制品；美式英语中更常使用 polyethylene。
polythenes
Dictionary facts from ECDICT, WIKTIONARY.