1.  period
2.  credit hour
3.  class hour

• 1. 学时: Hours | credit hours | period | class hour
• 2. 力学时: Dynamic Time-DT | DT | TerrestrialDynamicTime
• 3. 上学时间: Time at school | school time | Time to go to school

更多释义

• 1.你上学时一直挺聪明吧？
  Were you always fairly bright at school?
  dict.yoduao.com
• 2.我们在上学时同过班。
  We were in the same class at school.
  dict.yoduao.com
• 3.她上学时跟我同级。
  She was in my year at school.
  dict.yoduao.com

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