大家都知道,牛顿发明万有引力定律,是缘于牛顿发现了苹果落地;瓦特发明了蒸汽机,是缘于瓦特发现热蒸汽顶起了壶盖;一个孩子把苹果切成两半后发现苹果的核心是五星状的,缘于孩子不是纵向切而是把苹果拦腰切成了两半。当我们为他们的 Everyone knows that Newton's law of universal gravitation was due to Newton's finding that the apple was landing. Watt invented a steam engine because Watts found the hot steam to lift the lid. When a child cut the apple in half and found the core of the apple was Five-star-shaped, because the child is not cut vertically but the apple cut into half. When we are for them