additive
/ˈædətɪv/noun [具体名词] 添加剂，添加物
I think, though, that even in the USA, ethanol is still only used as an additive to gasoline, or petrol. 不过我认为，即使在美国，乙醇仍然只用作汽油的添加剂。
adjective [原级] 累积的，添加的；（与）叠加色（有关）的
Some contain more than one additive. 有些含有不只一种添加剂。
来自add(v. 加)
n. 添加剂，添加物
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- Strict safety tests are carried out on food additives. 对食品添加剂进行了严格的安全检测。
- Milk is sugar-free and additive-free with nutritionists recommending skimmed milk as the best choice before bed as it is the least fattening. 牛奶不含糖和添加剂，因此营养学家推荐脱脂牛奶作为睡前的最佳选择，因为它最不容易让人发胖。
- Milk is also sugar-free and additive-free with nutritionists recommending skimmed milk as the best choice before bed as it is the least fattening. 牛奶也不含糖，也不含添加剂，营养学家建议睡前最好选择脱脂牛奶，因为它最不容易发胖。