The success of an enterprise cannot be achieved without a deep understanding of the market and respect for consumers.

母亲的心是一个深渊，在它的最深处你总会得到宽恕。

For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.

模糊逻辑并不模糊。它是一种关于不精确性的精确逻辑。

植物杂交实验需要最仔细的关注和极大的耐心。