preservative [prɪˈzɜ:vətɪv]

以下由轻松背单词网站提供

n.防腐剂；防腐料；保护料；预防药

a substance used to prevent decay in wood

New timber should be treated with a preservative. 新采的圆木应进行防腐处理。
Salt is a common food preservative. 盐是一种常用的食物防腐剂。