But it is becoming easier as worlds that allow property rights and currency convertibility spring up , giving users a choice between the two approaches .
不过,这正变得更为容易,因为随着允许所有权和货币流通的世界的涌现,用户可以在两种方式中进行选择。
' To be a truly global financial center , you need to have full convertibility of the currency , ' says keith noyes , asia director for international swaps & derivatives association inc.