以昭信守 meaning in Chinese

in faith whereof; in witness whereof

In witness whereof , the undersigned , being duly authorized by their respective governments , have signed this agreement
兹有下列经双方政府正式授权的全权代表在本协定上签字，以昭信守。
In witness thereof , the parties hereby cause their duly authorized representatives to execute this contract at the date and place set forth below
本合同双方使其各自合法授权代表在下述时间地点签署本合同，以昭信守。