subinfeudation system的用法和样例：
例句
- The system of enfeoffment was one of the major measures adopted by the Western Zhou dynasty to consolidate its power.
分封制是西周王朝巩固统治的重要措施。 - After Qin Shi Huang unites six countries, will the system of enfeoffment have been transformed into the system of prefectures and counties.
秦始皇统一六国后，就把分封制改为郡县制了。
