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。
Sadly, I can't stretch myself that far.
The timing's bad; it's hard right now.
For various reasons, I have to decline this time.
It's a generous offer, but I must decline.
I'm glad you asked, but I have other plans.
Let's just say it wasn't meant to be this time.
Sorry, but I don't think I can help this time.
If I had more room, I'd have taken it on.
I'd love to, but it looks difficult.
Unfortunately, that's outside my expertise.
Honestly, I've got my hands full right now.
It pains me, but I'll have to pass this time.