to co-sign
01
共同签署, 联署
to sign a document jointly with another person or entity
例子
The committee chair co-signed the report with the secretary.
委员会主席与秘书共同签署了这份报告。
02
联署, 作为担保人签署
to sign a document in addition to another person's signature to guarantee a loan or financial obligation
例子
Banks often require a parent to co-sign for a minor's credit card.
银行通常要求父母为未成年人的信用卡联署。
