preservative
🇬🇧/prɪˈzɜːvətɪv/ 🇺🇸/prɪˈzɜːrvətɪv/📚 17973 1托福A preservative is a chemical that prevents things from decaying. Some preservatives are added to food, and others are used to treat wood or metal. 防腐剂
noun [物质名词]防腐剂，保护剂
Nitrates are used as preservatives in food processing.
硝酸盐在食品加工中被用作防腐剂。
adjective [原级]保护的，保存的
So far, specialists have worked to add preservative materials to the churches' exteriors.
到目前为止，专家们一直在为教堂外围添加防腐性材料。
pre(预先) + serv(保持) + ative(…的) → 预先用来保存的 → 防腐的
单词造句:
- 网友用“Preservative”造句精选
- The preservative used is usually ethylene glycol or propylene glycol, as alcohol will evaporate quickly and the traps will dry out. 常用防腐剂是乙二醇或丙二醇，因为随着酒精快速挥发，捕集器也随之恢复干燥。
- A pitfall trap can be any small container placed in the ground with the top level with the surrounding surface and filled with a preservative. 陷阱可以是任何放置在地面上的小容器，其顶部与周围的表面齐平，并装满防腐剂。