English Original
A smart housewife was told about a new stove that used half the coal of her current one. Thrilled, she exclaimed, "That's wonderful! If one stove saves half the coal, then buying two would save all of it!"
中文翻译
一位精明的家庭主妇听说有一种新炉子,耗煤量只有她现在所用炉子的一半。她兴奋地喊道:“太好了!如果一个炉子能省下一半的煤,那么买两个不就能把煤全都省下来了吗!”