duty system的用法和样例：
例句
- A uniform and consistent obligatory responsibility system must be established.
必须确立统一协调的义务责任体系。 - It further implements the safe production responsibility system, and enforces rigorous safe production laws and regulations and a related accountability system.
进一步实行安全生产责任体系，加强严厉的安全生产法规和相关责任体系。
