unfasten造句怎么写

Can you unfasten the lock catch of a box?

'I'm a going to put you through there. Take this light; go softly up the steps straight afore you, and along the little hall, to the street door; unfasten it, and let us in.

Please unfasten your safety belt now.

You can unfasten your seat belt now.

To unfasten, just lift the flap and pull out.