joint and several debtors指“连带债务人”，在理解连带债务人时要首先了解什么是连带债务。连带债务，就是指债务人有两个或两个以上，因全体债务人之间存在有连带关系，各债务人都负有全部偿付的义务，债务人中的一人或数人的完全偿付，对全体债务人生效，因而导致全部债的关系消灭的债务。或者可以简单的说，数人负同一债务，对于债权人各负全部给付义务者，为连带债务。

连带债务的核心是连带债务人之间的连带关系。连带关系是连带债务产生的法律依据。所谓连带关系，就是法律规定或当事人约定的一种法律关系；在该关系中，多数债务人中一人或数人所发生的事项，效力及于全体债务人。因此，连带债务关系中的债权人，可以对债务中的一人、数人或全部，同时或先后请求全部或部分履行债务。每一个债务人都有向债权人全部清偿的义务，而且只要债务没有清偿完毕，则任一个债务人无论是否应债权人的请求清偿过债务，也无论他自己应分担的债务是否履行完毕，对于还没有清偿的债务都有清偿义务。

从以上的解释可以进一步得出，连带债务人是指对债务承担连带责任的人，也就是对债务承担无限的责任，只有清偿债务后，连带责任才会解除。

双语例句：

（1）Against this background, Company A commissions Company B with the outplacement and the establishment and operation of a transfer company. In this context, Company B will in particular provide the consulting services in connection with the placement of the employees, while PMBT will act as the employer of the employees and undertake possible qualification measures. If the contract names Company B, Party A and Party B will owe the services as joint and several debtors, or as joint and several creditors in the case of creditor status.

在这种背景下，A公司委托B公司重新安置、成立和运营一家调任公司。在这种情况下，甲方将就此特别提供与安置员工员有关的咨询服务，而乙方将作为员工雇主采取可能的资格审查措施。如果合同名为B公司，甲方和乙方将作为连带债务人或连带债权人（若为债权人身份）负责此类服务。

（2）Article 51 Where the debtor’s guarantor or any joint-and-several debtor has paid off the debts on behalf of the debtor, he may declare his claims on the basis of his right of recourse to the debtor. 

第五十一条债务人的保证人或者其他连带债务人已经代替债务人清偿债务的，以其对债务人的求偿权申报债权。

（3）Centre of main interests has also been likened to the joint and several debtor’s principal place of business, although since large, corporate debtors may have several principal places of business, but in principle only one place where head office functions are carried out, the latter standard is likely to provide more certainty as to the debtor’s real centre of main interests.

主要利益中心还与连带债务人的主要营业地有关，虽然大型公司债务人可能有若干个主要营业地，但原则上只在一地行使总公司职能，因此这后一项标准很可能能为债务人的实际主要利益中心提供更高的确定性。