The women guarantee one another's debts and meet every two weeks to make payments and discuss a social issue, like family planning or schooling for girls.
妇女为另一份贷款作担保，每两周见一次面偿还贷款并讨论社会问题，如家庭计划或女孩的教育问题。
2
Other approaches use a central certificate authority to issue certificates that guarantee secure communication from one point to another within a network.
其它方法使用中央认证中心来发放证书，这些证书保证了网络中从一点到另一点的安全通信。
3
States which issue their own bonds, however, can guarantee that the cash will always be available, because they can always force the central bank to create the money.