… a large unsatisfied demand for education at university level. (Times Literary Supplement, Feb. 5, 1970)…大量得不到满足的要受大学教育的要求。
Dissatisfied 则是静态的“心怀不满”,而且主要指人。
... the young adult is dissatisfied more often with the job than the older worker. (Dale B. Harris, Automation, Education and Human Values)…年轻的成年人比年长一些的工人,对工作更为不满意。