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expressions (phrases, clauses, etc.), noun (common) (futsuumeishi)
feeling that one is living in a completely different age, feeling that something belongs to a different age, feeling that the world has changed dramatically
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この点に関しては、私が英語学習を志した20数年前とは隔世の感があります。
On this point it is poles apart from when I set myself on learning English 20 years ago.
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