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ethylene is [noun]
Ethylene is a flammable gas.
乙烯是一种易燃气体。
乙烯
先理解核心含义，再看它在真实句子里的用法。
乙烯
The simplest alkene; a colorless, flammable gas (C2H4) used in making many chemicals and sometimes as an anesthetic.
Ethylene is a flammable gas.
乙烯是一种易燃气体。
有机化合物乙烯的通称；最简单的烯烃,化学式C2H4,常温常压下为无色气态烃。
The common name for the organic chemical compound ethene. The simplest alkene, a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C2H4.
一种易燃无色气态烯烃；从石油和天然气中获得,用于制造许多其他化学品；有时用作麻醉剂
a flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic
由乙烷衍生的二价基团。
The divalent radical derived from ethane.
The factory uses ethylene to produce plastics.
这家工厂使用乙烯来生产塑料。
Ethylene is an important industrial chemical.
乙烯是一种重要的工业化学品。
Scientists are studying the effects of ethylene on fruit ripening.
科学家正在研究乙烯对水果成熟的影响。
Ethylene is a flammable gas.
乙烯是一种易燃气体。
Ethylene is used in the manufacturing of plastics.
乙烯用于塑料制造。
Ethylene is used as an anesthetic.
乙烯被用作麻醉剂。
Not this
Ethylen is a key raw material for plastics.
Use this
Ethylene is a key raw material for plastics.
拼写错误：乙烯的英文拼写是 ethylene，不是 ethylen。注意末尾的 -ene 后缀。
Not this
The chemical ethene is also known as ethylene.
Use this
The chemical ethylene is also known as ethene.
词序混淆：ethylene 和 ethene 是同一物质的两个名称，但句子中应将常见名称（ethylene）放在主语位置，ethene 作为别名。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
乙烯气体
Ethylene gas is released by fruits to speed up ripening.
水果释放乙烯气体以加速成熟。
乙烯生产
The new plant will double the country’s ethylene production.
新工厂将使该国的乙烯产量翻一番。
乙烯单体
Ethylene monomer is the building block of polyethylene.
乙烯单体是聚乙烯的构成单元。
乙烯分子
Each ethylene molecule contains two carbon atoms and four hydrogen atoms.
每个乙烯分子含有两个碳原子和四个氢原子。
乙烯含量
The ethylene content in the gas mixture was measured in the lab.
实验室测量了混合气体中的乙烯含量。
Use ethylene naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆：ethylene 词尾 -ene 表示烯烃，ethylene 就是最简单的乙烯（C2H4），联想‘乙’字头的烯。
语域：formal 常见场景：化学教材、石油化工、医学麻醉 该词属于化学专业术语，多用于科技文献、化工生产和医学等正式场合；日常对话中很少出现。
不可数名词
Dictionary facts from ECDICT, WIKTIONARY.