单词：academic_session 

名词

• 
  [1.n.academic_session] (同义词:[school_term]  [academic_term]  [academic_session]  [session( n. 会议, 开庭 )]  )
• 
  注释列句：the time during which a school holds classes; "they had to shorten the school term"
• 上位词 -> [term( n. 学期, 期限, 期间, 条款, 条件, 术语 )]  [time_period]  [fundamental_quantity(基本量 )]  [measure( n. 尺寸, 量度器, 量度标准, 方法, 测量, 措施 vt. 测量, 测度, 估量, 分派, 权衡, 调节 vi. 量 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )] 
• 下位词 -> [summer_school(n.暑期班, 暑期学校 )]  [semester( n. 学期 )]  [trimester( n. 三个月, 学期 )]  [quarter( n. 四分之一,方向, 地区, 方面, 季, 季度, 一刻钟 num. 四分之一, 刻 )] 
  部分总称 -> [school_year(学年 )] 
  所有总称 -> [school_year(学年 )]