别人向我借钱时一般都会请求立字据。

When someone borrows money from me, I usually ask for an IOU.

然而，这张私了字据并未给整个纠纷画上句号。

However, this does not give the whole compounding disputes writings ends.

重新恢复短信功能需去警察局并立下书面字据，保证不再重蹈覆辙。

Restoring it would require a visit to the police and a written pledge not to text smut again.

兹证明此纸持有人拥有良心一颗，质地良好，尚未泯灭，空口无凭，立此字据…

This is to certify that the holder of this paper is in possession of a fine heart of quality texture which is not yet eaten up by any dog male or female …

担保一种字据或保证，通常为书面的，以保证某种产品或服务的质量或耐用性。

A promise or an assurance, especially one given in writing, that attests to the quality or durability of a product or service.