Currency exchange rates are always subject to variation.
貨幣的兌換率始終波動。
This soup is a spicy variation on a traditional favourite.
這種湯是在一種受歡迎的傳統湯羹中加了香料。
The survey found a wide variation in the prices charged for canteen food.
這項調查發現不同的餐廳出售食物的價格存在很大的差別。