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What do you need help with? If it's an essay or something, I'm not too good at those, but I still would like to lend a hand :)
Metaphors are comparing unlike things without the words like or as.... simile is comparing thing using like and/or as
A discourse community can be described as a group of people that share common goals, sources of information, terminology, and methods of communication along with a certain level of expertise and knowledge on a subject. However, it is often distinguished from 'speech community' on the grounds that speech communities are sociolinguistic groupings with communicative needs such as socialisation and group solidarity, whereas discourse communities are groupings based on common interests.
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The sentence that say, "Only 30 seconds of fuel for landing equipment
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