护士正在为手术室准备消毒设备。

The nurse is preparing sterilized equipment for the ___O.R..

医院运用运筹学方法改善了急诊室的排队系统。

The hospital applied ___o.r. methods to improve the queuing system in the emergency room.

由于案件情节轻微，法官允许他以个人担保获释。

The judge allowed him to be released on ___o.r. due to the minor nature of the case.