He has no conception of how difficult life is if you're unemployed.
他不懂得失业后生活会是怎样的艰难。
But if the rest of the world might think you are past it, your darling little grandchild has no conception of age.
但就算整个世界都认为你老得不中用了，你可爱的孙子或孙女可没有年龄的概念。
He has absolutely no conception of how to run a business.
他对于经营生意完全一点概念都没有。
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