Robert Fulton once wrote, “The mechanic should sit down among levers, screws, wedges, wheels, etc., like a poet among the letters of the alphabet, considering them as an exhibition of his thoughts, in which a new arrangement transmits a new idea.”

　　结构分析：句子主干Robert Fulton once wrote, “The mechanic should sit down…, like a…, considering them as…, in which a…”，considering…分句是现在分词做状语，可以拿到句首，也可以在句尾，in which a new arrangement transmits a new idea是非限定性定语从句。

　　译文：罗博特•富尔顿曾经写道，机械工将坐在杠杆、螺丝、楔、轮子等周围，像诗人对待字母表中的每个字母一样，把它们作为自己的思路展示，每一个新组合都传递一个新概念。