求翻译：PPT教学文档容纳教学信息量大，内容丰富，这本来是个优点，但是内容过多就会导致教学文档呈现不出重点和难点，所有内容都一概而论，主次不分。是什么意思？

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PPT teaching documents for teaching large amounts of information, and is rich in content, this would have been an advantage, but too much will be teaching in the document is a difficult and all of the content, and the generalizations and confuse.

The PPT teaching documents accommodation teaching information content is big, the content is rich, this is originally a merit, but the content excessively are many can cause the teaching documents not to be able to present key and the difficulty, all contents all are generally spoken, primary and se

Teaching PPT document hold large amount of teaching, rich in content, which is an advantage, but too much can cause document rendering is not a key and difficult points of teaching, all content is lumped together, primary and secondary, regardless.

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