The Joint Inspection Unit helps ensure that the activities of the various organizations of the UN system are carried out in the most economical manner and that optimum use is made of resources.是什么意思_The Joint Inspection Unit helps ensure that the activities of the various organizations of the UN system are carried out in the most economical manner and that optimum use is made of resources.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句