slow diffusion的用法和样例：
例句
- The process of diffusion would often be very slow, depending on climatal and geographical changes, on strange accidents.
分散的过程很缓慢，这取决于气候与地理的变迁，取决于意外的偶发事件。 - The process for seeking approval from federal agencies is so disjointed and slow that pushing a line over a national park or river might as well be crossing the Styx.
同时，联邦机构的审批流程是如此分散和缓慢，在国家公园或河流上拉一条电线就像横渡冥河。
