preservatives
n. 防腐的（preservative 的复数）；[助剂]防腐剂；保存剂
例句
The juice contains no artificial preservatives.
这种果汁不含人工防腐剂。
《牛津词典》
Nitrates are used as preservatives in food processing.
硝酸盐在食品加工中被用作防腐剂。
《柯林斯英汉双解大词典》
Spices actually aren't very effective as preservatives.
香料实际上不是很有效的防腐剂。
