(c) Identify major constraints hindering the implementation of Agenda 21, propose specific time-bound measures to be taken and institutional and financial requirements, and identify the sources of such support;
(c) 查明有碍执行《21世纪议程》的主要制约因素，拟议应采取的、有时限的具体措施，提出在体制和财政方面的需要，并指明此类支助的来源；