债券是正式的契据。

A bond is a formal deed.

youdao

书信经常是一种活动安排，也被视为一份合同的契据。

Business letters are often an arrangement or regarded as evidence of a contract.

youdao

契据，证书作为合约、转让或合同的证明的书面文书；契约。

A written instrument given as evidence of agreement, transfer, or contract; a deed.

youdao

契据，证书作为合约、转让或合同的证明的书面文书；契约。

A written instrument given as evidence of agreement, transfer, or contract; a deed.

youdao