The sentence that needs to be revised because its description is too vague is we had to walk up several flights of stairs to get there.
A sentence is vague when it does not communicate a meaning.
This sentence is not clear enough to understand and comprehend the meaning.
Walking up several flights seem so impossible hence it is vague.
Therefore, The sentence that needs to be revised because its description is too vague is we had to walk up several flights of stairs to get there.
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