A preservative is a chemical that prevents things from decaying. Some preservatives are added to food, and others are used to treat wood or metal.
例句
Nitrates are used as preservatives in food manufacture...硝酸盐在食品加工业中被用作防腐剂。Though the panels come pre-treated, they needed a final sealing with two coats of preservative.虽然这些镶板运来时经过了预处理,但是还需要涂上两层防腐剂进行最后的密封。
英汉词典释义
n.
防腐剂
The wood is treated with preservative to prevent decay.这块木头用防腐剂处理过以防止腐烂。Make sure the panels are treated with a wood preservative.确保镶板用木材防腐剂处理过。
英英词典释义
Noun
1. a chemical compound that is added to protect against decay or decomposition
Adjective
1. tending or having the power to preserve;
"the timbers should be treated with a preservative"