Three Major Elective Courses 三门主修任选课 ; 三门主修课程或
Swedish health officials tried and failed to cut queues by increasing direct funding for hospitals and even issued an edict requiring hospitals to cut queues for elective operations to three months.
瑞典健康部门的官员尝试通过增加对于医院的直接资助，甚至发布法令要求医院将选择性手术的等待队伍缩短到三个月，但是都失败了。
A full-term pregnancy lasts 40 weeks, but elective deliveries are often planned for two or three weeks earlier.
妊娠期满需要40周，但是自主安排分娩时间往往将产期提前两三周，甚至37周，而这却被认为是妊娠期满。
The discussion consists of three parts listed below:Part one: background of studying elective courses, concerned concept, literature and method.
本文主要从三个部分进行探讨：第一部分：选修课的研究背景，相关概念、文献及研究方法。
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