Can erudite person not use a slang?

@carcass
Can you provide the OE of this question. I have a difficulty understanding this sentence.

The meaning of the sentence is this:

Nonetheless, his mentor asserted that she should write a thesis in standard English (or whatever is her language), she might not use slang and this indeed overrides years of learning.

Moreover, she has been attempting to being erudite, who has a LOT of knowledge such as a scholar, actually she miserably failed.

Ask for further assistance.

Regards
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