preservative
preservative 英 [prɪˈzɜ:vətɪv] 美 [prɪˈzɜrvətɪv]
n. 防腐剂；预防法；防护层 adj. 防腐的；有保存力的；有保护性的
名词复数:preservatives
- Anything that's preservative keeps things alive, healthy, or fresh. Some cooks swear by the preservative powers of lemon juice, which can keep fruit tasting fresh and save avocado slices from turning brown.
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- n. 防腐剂；预防法；防护层
- adj. 防腐的；有保存力的；有保护性的
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1. You could say that nail polish is preservative free!
你可以说指甲油是一种免费的防腐剂。
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2. It is the most widely-used preservative for vaccines.
它是一种最为使用广泛的疫苗防腐剂。
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3. They add flavour and act as a preservative but they can be present even in foods you don't expect or are labelled in ways that you don't recognise.
它们可以添加风味，并作为防腐剂，但是它们可以存在于你没有预料到的食品中，或者以你不能识别的方式贴上标签。
- preservative (adj.) late 14c., from Old French preservatif and directly from Medieval Latin praeservativus, from stem of praeservare (see preserve (v.)). The noun is from early 15c., "a preservative medication;" sense of "chemical added to foods to keep them from rotting" is from 1875.
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