如果特别提款权要成为一种真正的货币，它就得是一种可完全兑换的工具，而不仅仅是一种信用额度，而且必须由具有“硬”货币的国家签署认可。
To become a true currency, the SDR would have to be a fully convertible instrument, not a line of credit, underwritten by countries with "hard" currencies.
教育局也证实24所学校将收到资助建立之事得到签署和认可。
The Department for Education has confirmed that funding for all 24 schools has been signed and agreed.
该条约经过189个国家批准、认可或签署，已于2005年2月16日生效。
The treaty, which went into force on February 16, 2005, has been ratified, accepted or agreed to by 189 countries.
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