1
add a preservative to sth
The company adds a preservative to the drink to keep it fresh.
公司在这款饮料中添加防腐剂以保持新鲜。
防腐剂
先理解核心含义，再看它在真实句子里的用法。
防腐剂
a chemical compound added to protect against decay or decomposition
The company adds a preservative to the drink to keep it fresh.
公司在这款饮料中添加防腐剂以保持新鲜。
防腐剂；尤指添加于食品中的天然或人工保存剂。
Any agent, natural or artificial, that acts to preserve, especially when added to food.
防腐剂
a chemical compound that is added to protect against decay or decomposition
This brand of juice contains no artificial preservatives.
这个品牌的果汁不含人工防腐剂。
The label says the preservative keeps the bread fresh for two weeks.
标签上说这种防腐剂能让面包保持新鲜两周。
Some people prefer food without any preservatives.
有些人更喜欢吃不含任何防腐剂的食物。
The company adds a preservative to the drink to keep it fresh.
公司在这款饮料中添加防腐剂以保持新鲜。
preservative 表示“防腐剂”时是可数名词，常用复数。
Natural juices usually contain no preservatives.
天然果汁通常不含防腐剂。
In home-made jams, sugar acts as a preservative.
在自制果酱中，糖起到防腐剂的作用。
Vitamin C is sometimes used as a preservative in processed meats.
维生素C有时被用作加工肉制品中的防腐剂。
Not this
This substance is a preservation.
Use this
This substance is a preservative.
preservation 意为“保存/保护”，而“防腐剂”对应的名词是 preservative；两者拼写相近但词义不同。
Not this
This food contains preservative.
Use this
This food contains a preservative.
preservative 是可数名词，指一种具体的防腐剂时必须加不定冠词 a；不能用零冠词直接说 contains preservative。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
食品防腐剂
Sodium benzoate is a common food preservative.
苯甲酸钠是一种常见的食品防腐剂。
人工防腐剂
Many consumers prefer products without artificial preservatives.
许多消费者喜欢不含人工防腐剂的产品。
天然防腐剂
Salt and vinegar act as natural preservatives.
盐和醋起着天然防腐剂的作用。
化学防腐剂
Some chemical preservatives are suspected to affect health.
有些化学防腐剂被怀疑会影响健康。
含有防腐剂
This sauce contains preservatives to stay fresh longer.
这种酱料含有防腐剂，以保持更长时间的新鲜。
不含防腐剂
The label says the juice is free from preservatives.
标签上写着这种果汁不含防腐剂。
Use preservative naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
pre（预先）+serve（保存）→ 预先保存食物防变质，所以是防腐剂。
语域：neutral 常见场景：food labels、ingredient lists、cosmetics manufacturing 作为名词通常指防腐剂，多用于食品、化妆品和工业产品的标签或说明中；在日常对话和书面语中都比较常见，属于中性用词。
押韵词：conservative（/kənˈsɝvətɪv/，重读元音之后的部分 /vətɪv/ 与 preservative 相同）。preserve 有相同的 /zɝv/，但缺 /ətɪv/ 后缀；preventative 拼写相近，但读 /prɪˈvɛntətɪv/，中间是 /vɛnt/ 而非 /zɝv/；derivative 仅共享结尾 /ətɪv/，重音元音不同；preservation 重音在后，读 /veɪ/ 而非 /ɝ/。
Dictionary facts from ECDICT, WIKTIONARY.