preserve的形容词形式
preservative
n. 防腐剂；预防法；防护层；
adj. 防腐的；有保存力的；有保护性的；
例句Salt is a preservative for meat.
盐是肉类的防腐剂。
The smell of preservative lingers in the air.
空气中残留着防腐剂的味道。
Can samples with preservative be tested?
含防腐剂的样品可以测试吗？
Preservative is usually added to tinned meat.
防腐剂通常加在肉类罐头里。
This kind of instant noodle is preservative-free.
这种方便面不含防腐剂。
It is used as a preservative in certain acid food products.
在某些酸性食物制品中它被使用作为防腐剂。
Salt started out more than 5, 000 years ago as a simple preservative.
盐于5,000多年前作为一种简单的防腐剂开始应用。