短语词组短语Initial Enrollment Period 首次参加期;初始登记期Special Enrollment Period 特殊参加期;特别参加期Annual Enrollment Period 年度申请期General Enrollment Period 一般参加期;一般加入期Open Enrollment Period 开放注册期;开放参加期;公开注册阶段;保险购买开放期 返回 enrollment period