The unutilized balance was due mainly to the delayed deployment of United Nations police personnel, with an average monthly deployment of 645 as compared to the budgeted monthly average deployment of 715 police officers.
17. 出现未用余额的主要原因是联合国警察人员的部署延迟，平均每月部署645人，而预算编列为平均每月部署715名警官。