在这次报告中，我们制作了视频和幻灯片，让不太了解的同学们详细了解了这次售卖的准备工作，进行过程和最终结果。
In the report, we made video and power point and let some students who didn' t know about this activity get to know the preparation, process and the result.
在这次报告中，我们制作了视频和幻灯片，让不太了解的同学们详细了解了这次售卖的准备工作，进行过程和最终结果。
In the report, we made video and power point and let some students who didn' t know about this activity get to know the preparation, process and the result.
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