CO

• abbr.
  • Colorado
  • Commanding Officer 指挥官
  • conscientious objector

Co

• abbr.【化学】元素钴 (cobalt)的符号

Co.

• abbr.
  • [复数 Cos.]
  • company
  • county [亦作 co.]

C.O.

• abbr.
  • cash order
  • Commanding Officer
  • conscientious objector (由于道德或宗教原因)拒服兵役者
  • correction officer

c.o.

• abbr.
  • care of
  • carried over