SDRs, also called Paper Gold, were created by the IMF in 1969 as a type of reserve asset and served as the unit of account.是什么意思_SDRs, also called Paper Gold, were created by the IMF in 1969 as a type of reserve asset and served as the unit of account.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句