COpref.共同；一起；联合abbr.公司（=company）abbr.郡；县（=county）abbr.指挥官（=Commanding Officer）counit余单位

1. He died from carbon monoxide poisoning from the exhaust fumes of his car.
   他因车子排放出的废气当中含有一氧化碳中毒而死。
2. Although CO intoxication was not found during her first visit, it was found and treated in the returning visit.
   虽然首次并未能诊断出其一氧化碳中毒，幸好有机会于随后的返诊作出诊断。