例一：floating
itisnotsurprising，(...内容隐藏,请先注册或登录...)，thattheworldsawareturntoafloatingechangeratesystem.centralbankswerenolongerrequiredtosupporttheirowncurrencies.
floatingpolicyisofgreatimportanceforeporttradeitis，(...内容隐藏,请先注册或登录...)，aconvenientmethodofinsuringgoodswhereanumberofsimilareporttransactionsareintended，(...内容隐藏,请先注册或登录...)，