求翻译：同时合成人员将根据国家化合物样品库中现有的筛选结果，对发现的有一定药物活性，但活性不够好的化合物进行结构优化；针对一些靶点新颖、结构类型特别的活性化合物，开展合理化药物设计，通过与外单位化学工作者合作或向服务型化学公司订制等方式，定向设计合成一部分特有的靶向或探针性化合物库，以满足筛选单位对化合物的要求。是什么意思？

While synthesis personnel will under national compounds samples library in the existing of filter results, on found of has must drug activity, but activity enough good of compounds for structure optimization; for some target point novel, and structure type special of activity compounds, carried out rationalization drug design, through and outside units chemical workers cooperation or to service type chemical company set system, way, directed design synthesis part unique of target to or probe sexual compounds library, to meet filter units on compounds of requirements.