Therefore, given the emphasis on increasing NEX usage and the costs and risks associated with its adoption, UNIDO believes it imperative that a rigorous evaluation of this modality be undertaken to gauge its effectiveness.
因此，鉴于重点放在了国家执行方式的进一步采用和与之有关的成本和风险上，工发组织认为，必须对这种方式进行严格评估，以衡量其有效性。