我在每堂课之前都花费大量的时间开发体系结构，并且实现最小限度的应用。
I spent a significant amount of time before each class developing the architecture and a minimal implementation for the class to start with.
另外一些学校只要小学生们不在上课时间使用，允许他们携带手机入校。 但是多数学校还是希望孩子们在每一堂课开始之前，把那些电子装备暂时存放在储物柜中或收好在袋子里。
Others allow pupils to carry phones if they do not use them during the school day, but most expect electronic equipment to be deposited in lockers or put in zipped bags at the start of each lesson.
就像历史每天都在被创造着一样，历史老师的课程任务不停随其增长着，哪怕每堂课的时间仍然保持不变。
As history is made every day, history teachers' subject matter is growing with it — even as the number of classroom hours stays the same.
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