To have gone through hardships and troubles
Metaphors that compare humans to animals "anthropomorphize" them. Anthropomorphization is a literary device that gives human qualities to animals. These metaphors may help to highlight the similarities between animal natures and human nature, which illustrates how truly similar every living thing is to each other. Hope this helps.
Functional meaning working or in good condition
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I'm going to need more context, what is the question?
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u will find the answer in word