お手すきの際で構いませんのでの英語

I shall not detain you long

I shall not keep you long.

the action of leaving something as it is and not touching or altering it in any way

of being helpless

I always do my work with scrupulous care.

I'll come if nothing interferes.

I am sorry to give you trouble.

I can't afford it.

I hope you won't be offended.

I don't mind taking a glass of wine with you.

Take as much as you can, for it is so much gain.

I hope you'll like it.

I have a well-filled purse

I am flush of money.

leaving something untouched

if you don't mind

I never do careless work

I always do my work with scrupulous care.

I do not know where to begin.

I very much doubt if you can pull it off.

You can do it at your leisure.