同学你好，该知识点来自沪江网校《新托福高级语法【随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好，这句话是完整的~要这样拆开看：
here he sees the industry of his native country displayed in a new manner, and traces in their works the embryos of all the arts, sciences, and ingenuity which flourish in Europe.
see和trace是动词（trace此处不是名词~）
trace something：发现；追踪
而in their works在这里是补充说明，放到句尾应该会更清楚结构：and traces the embryos of all the arts, sciences, and ingenuity which flourish in Europe in their works
trace the embryos：追踪胚胎/看到萌芽
同学可以再回去看下句意哦~