Open up the second classroom, stretch the classroom instruction.

开辟第二课堂，延伸课堂教学。

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Finally, a reasonable additional extra-curricular content, develop the second classroom English teaching.

最后，合理增设课外内容，开展英语第二课堂教学。

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Library is the second classroom for student in medical university, and has abundant educational resources.

图书馆是医学生的第二课堂，具有丰富的教育资源。

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"We surmise that it was during the second classroom episode that he heard responders coming and apparently at that, decided to take his own life, " he said.

WSJ: Grieving Newtown, Conn., Searches for Answers

Two or three bullets also struck a classroom on the second floor of the school, above the library.

CNN: Police search for gang members in shooting

As I discuss this issue with executives in the boardroom and professors in the classroom, they often refer to Hispanics as second-class citizens.

FORBES: Connect