求翻译：这是前段时间给一些外行人讲课的PPT,今天照办来给大家讲就有点班门弄斧的感觉，甚至诚惶诚恐；但还是装着胆子来了，大家互相学习吧，不对的地方请各位指出！是什么意思？

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This is the time to teach a number of laymen PPT do today, to give you a little bit on betraying, and even feel the fear and trepidation; however, the timid, we have to learn from each other, is wrong please point out!

This a while ago gives PPT which some laymen taught, today acts accordingly says for everybody on the feeling which a little showed off meager skills before an expert, even in reverential awe; But installed the courage to come, everybody studied mutually, not the right place asked each position to p

正在翻译，请等待...

正在翻译，请等待...