premium [ˈpri:miəm]

以下由轻松背单词网站提供

n.加付款；赠品；adj.高级的；售价高的

an amount which is more than usual

You have to pay a premium for express delivery. 寄快递你得付额外费用。
Fresh water was at a premium after the reservoir was contaminated. 在水库被污染之后，清水便因稀而贵了。