模拟这样情景
Simulate such a scenario
以上为机器翻译结果，长、整句建议使用 人工翻译 。
当我写好一份教案，认真地在脑海模拟几次上课的流程和情景后，我以为那节课可以上的很好了，但事实却不是这样。
When I write a teaching plan, seriously in the minds of several classes of simulation processes and scenarios, it seems to me that the lesson could be very good, but this is not so.
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