When the defeat must prepare a lesson successfully;

失败之时要预习成功；

youdao

The full use collective's strength, completes the collective to prepare a lesson again.

再充分利用集体的力量，做好集体备课。

youdao

Class 35 or 40 minutes from the efficiency of not only the classroom, prepare a lesson in class can also be highly effective.

课堂35或40分钟的效率不仅仅来自于课堂，预习也可以使课堂达到事半功倍的效果。

youdao

It's a lesson no one is prepared for, and ironically, you have no time to prepare.

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