When the defeat must prepare a lesson successfully;

失败之时要预习成功；

youdao

You need to prepare a lesson for that day of class, and set it in a context so that your principal can understand how it fits in.

你必须为观摩日准备教学内容，并让其融入统合的课程中。

youdao

This includes the teacher's ability to prepare a lesson plan focusing on the teaching aim and to work towards the aim with certain teaching strategies.

这包括师资的能力，编写教案侧重于教学目标，并努力实现的目标，具有一定的教学策略。

youdao

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

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