Importers, however, suffer the most when their currency decreases in value, because foreign goods cost them more.

然而当卢布贬值时，进口商受损最大，因为购买外国货物需要花更多钱。

China's recent policy has been to keep the money stable -- to avoid sharp increases or decreases in value against other currencies.

近期，中国一直推向货币稳定政策，避免因人民币汇率导致其它货币出现大幅度涨跌。

So what do you mean by all of this when you say that the dollar has risen or decreased in value?

那么，当您说美元升值或贬值时， 这一切是什么意思？

Britain's money, the pound, has decreased in value on currency exchanges around the world. The pound has dropped to its lowest level in 30 years.

英国的货币英镑在世界各地的货币兑换处贬值。英镑已跌至 30 年来的最低水平。

As the heat rises during the day, the condition of produce deteriorates and food sold at farmer's markets can decrease in value to less than half of where it started if it gets sold at all.

随着日间气温上升，生产条件会恶化，在农贸市场出售的食物也会因此质量降至生产时的一半以下，这还是在这些食物卖得出去的情况下。