1. The main idea and basic concepts of polychromatic sets are first introduced. 首先介绍了多色集合的主要思想和基本概念。
2. The variety of jasper includes red, green, blue, yellow and orange, colorless or white, black, parti-color gemstone, cat's eye jasper and polychromatic stone-like jasper. 碧玺的种类包括（红色的、绿色的、蓝色的、黄和橙色、无色或白色、黑色、杂色宝石、猫眼碧玺、变色石似的碧玺）。
3. With the aid of workflow modeling theory based on polychromatic sets, the workflow route of complicated system can be accurately and expediently obtained with a simple and flexible program. 采取基于多色集合理论的工作流建模理论，用计算机可以正确、便捷地求取复杂系统的工作流程路径，算法简单且易于编程实现。
英英解释
adj.
1. (of light or other electromagnetic radiation) composed of more than one wavelength
2. having or exhibiting many colors
