18. Decides, on an exceptional and ad hoc basis, unless notified otherwise by a Member State within sixty days of the issuance of the notification by the Secretary-General, to place Member States on the multi-year assessment plan for the full period of the capital master plan;
18. 决定，除非会员国在秘书长发出通知后60天内告知另有选择，作为一项特殊和临时办法，在基本建设总计划整个期间都将把会员国纳入多年分期缴付摊款计划；