剑桥词典abbreviation for care of: used in addresses when the person you are writing to is staying at someone else's home 由…转交（care of的缩写） Sylvia Mendez, c/o Ann Smith, 12 Glastonbury Lane, Bickerton 比克顿格拉斯顿伯里巷12号安‧史密斯收，转交西尔维娅‧门德斯 返回 c/o