preservative

This kind of organic food does not contain any artificial preservatives.

这种有机食品不含任何人工防腐剂。

The pinewood has been treated with preservative.

已经对松木做了防护处理。

Sources of sugars are refined sugar—sucrose, which is a food sweetener and preservative and fruit sugars—fructose.

糖类的来源是精制糖——蔗糖，它是一种食品甜味剂、防腐剂和果糖。

They made good use of the preservative effects of ice.

他们很好地利用了冰块的防腐保护作用。

So far, specialists have worked to add preservative materials to the churches' exteriors.

到目前为止，专家们一直在为教堂外围添加防腐性材料。