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be made of polyurethane
说明某物由聚氨酯制成时，常用 be made of。
The soles of these shoes are made of polyurethane.
这些鞋的鞋底是由聚氨酯制成的。
聚氨酯；聚氨基甲酸酯
polyurethanes — plural of polyurethane
先理解核心含义，再看它在真实句子里的用法。
聚氨酯；聚氨基甲酸酯
polyurethane
The soles of these shoes are made of polyurethane.
这些鞋的鞋底是由聚氨酯制成的。
含有氨基甲酸酯键的多种聚合物树脂中的任何一种,广泛用于工业和日常应用。
Any of various polymeric resins containing urethane links; used in many industrial and domestic applications.
含氨基甲酸酯基的多种聚合物；有多种合成形式,用作粘合剂、塑料、涂料或橡胶。
any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
The sofa cushions are made of polyurethane foam.
沙发坐垫是由聚氨酯泡沫制成的。
Polyurethane is often used to make durable paints and coatings.
聚氨酯常被用来制造耐用的油漆和涂料。
They sprayed polyurethane on the floor to protect the wood.
他们在地板上喷涂聚氨酯以保护木质。
说明某物由聚氨酯制成时，常用 be made of。
The soles of these shoes are made of polyurethane.
这些鞋的鞋底是由聚氨酯制成的。
表示用途时，常用被动语态 be used as。
Polyurethane is used as an adhesive and a paint.
聚氨酯可用作粘合剂和涂料。
polyurethane 可直接放在名词前作定语，表示“聚氨酯的”。
Polyurethane foam is a common insulation material.
聚氨酯泡沫是一种常见的保温材料。
Not this
The floor is coated with a polyurethane.
Use this
The floor is coated with polyurethane.
当 polyurethane 泛指聚氨酯这种材料时是不可数名词，前面不加不定冠词 a；a polyurethane 特指一种聚氨酯，与这里“用聚氨酯涂地板”的意思不符。
Not this
Polyurethane are widely used in making foam.
Use this
Polyurethane is widely used in making foam.
polyurethane 作材料讲是不可数名词，谓语动词用单数 is；只有用复数形式 polyurethanes 指多种聚氨酯时才能搭配 are。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
聚氨酯泡沫
The cushions are filled with polyurethane foam.
这些坐垫填充的是聚氨酯泡沫。
聚氨酯涂层
A polyurethane coating protects the wooden floor from scratches.
聚氨酯涂层可以保护木地板免受刮伤。
聚氨酯粘合剂
Use a polyurethane adhesive to bond the two surfaces.
使用聚氨酯粘合剂将两个表面粘合在一起。
聚氨酯密封胶
The polyurethane sealant keeps water out of the joints.
聚氨酯密封胶可以防止水进入接缝。
聚氨酯漆
They applied polyurethane paint to the metal railings.
他们给金属栏杆涂上了聚氨酯漆。
聚氨酯保温材料
Polyurethane insulation helps reduce heating costs.
聚氨酯保温材料有助于降低取暖费用。
Use polyurethanes naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 poly 记成‘多’，urethane 记成‘氨酯’，泡沫、涂料、橡胶都是聚氨酯的多种用途。
语域：neutral 常见场景：technical writing、manufacturing、consumer product descriptions polyurethane 是聚氨酯的通用英文名称，在技术文档、工业制造和日常产品说明中都很常见，语气总体中性。通常可直接使用该词，无需特意区分正式或口语场合。
指聚氨酯这种材料时通常不可数；表示不同种类时可加复数 -s，如 polyurethanes。
Dictionary facts from ECDICT, WIKTIONARY.