Three Reasons

Teacher: Stone, give me three reasons why you know the Earth to be round.

Stone: Ma says so, Pa says so, and you say so!

三条理由

老师：斯通，说出三条理由来证明地球是圆的。

斯通：妈妈是这么说的，爸爸是这么说的，你也是这么说的。