preservative
英 [prɪˈzɜːvətɪv]
[NOUN]
preservatives
1. [C, U 有变体名词] 防腐剂
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.
双语例句
例：Nitrates are used as preservatives in food processing.
硝酸盐在食品加工中被用作防腐剂。
NOUN. 名词
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