日本語をクリックすると英文が表示されます。まずは自分で英語にしてから答え合わせを。
Unfortunately, that's outside my expertise.
I'm afraid I can't take responsibility that far.
If I had more room, I'd have taken it on.
I'll gratefully accept the thought alone.
Let's just say it wasn't meant to be this time.
The timing's off now, so let's revisit it.
It's a generous offer, but I must decline.
I'm sorry, but I'm not able to do that.
The timing's bad; it's hard right now.
I'd love to help, but this is one thing I can't.
I truly wish I could help, but...
Unfortunately, I don't have it on me.