Imagine you have one cup of tea and one cup of coffee.Place a spoonful of the tea into the coffee and then place a spoonful of the tea/coffee mixture back into the tea.

• 一杯咖啡一杯茶，从茶杯中舀一勺茶倒到咖啡杯中，再从咖啡杯中舀一勺咖啡和茶的混合物倒到茶杯中。