sugar lump

noun

1. 方糖
   a small cube of sugar, used in cups of tea or coffee

1. 方糖
   Sugar lumps are small cubes of sugar. You put them in cups of tea and coffee.

1. Coffee is a solution when a sugar lump dissolves in it.
   糖块溶解在咖啡里时，咖啡成了溶液。