我会记录我在销售的主题上学到的知识。实际上，它对我以外的任何人来说意义不大，但是它的作用以及它的帮助方式对需要它的人意味着一切。
(I'll record what I've learnt on the subject of what I sell. What it actually is means little to anyone other than me, but what it does and how it helps, means everything to those who require it.)