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now (when it is already much too late); at this stage
afresh; anew; again
今さら謝られても、失った信頼は簡単には戻らない。
Even if you apologize now, lost trust is not easily restored.
今さら後悔しても仕方がないから、前を向こう。
There is no use regretting things at this point, so let us look ahead.
今さらそんなことを言われても困ります。
It is troublesome to be told something like that at this stage.