Premium Bond
noun(in Britain 英国 a document with a number on it which can be bought from the government and which offers a chance of winning money as a prize every month. The top prize is £1 million. Unlike National Lottery tickets, the Premium Bonds can be sold back to the government at any time for the original price. They were introduced in 1956 as a way of encouraging people to save money. No interest on the money is paid to individual participants except through the prize draw; the interest paid by the government goes into the prize fund. 特级债券：上面有编号的文件，可以从政府购买，并且每个月都有机会赢得奖金。最高奖金为100万英镑。与国家彩票不同，高级债券可以随时以原始价格卖给政府。它们是在1956年引入的，目的是鼓励人们省钱。除非通过抽奖，否则不向个人参与者支付这笔钱的利息；政府支付的利息进入奖金基金。