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Please send the duplicate of the contract countersigned to .

请将已会签的合同一份寄给我方。

Competitor aged under 21 , this application form must be countersigned by guardian .

年龄未满21岁之赛员，必须由监护人于表格上签署。

Upon receipt of the countersigned fax copy or scanned copy , the contract validity will take force .

合同一经对方传真或扫描回签，将生效。

Traveler 's checks are not valid until they are countersigned .

旅行支票只有在背面签字后才有效。

This certificate trust list is not valid . The certificate which countersigned this list is not valid .

该证书信任列表无效。反签名该列表的证书无效。