- =Department of Commerce 商务部
- =Department of Communications 交通部
- =Data Optimizing Computer 数据控制工作室工作人员
- =documentary 纪录影片，纪实性影片
a licensed medical practitioner;
"I felt so bad I went to see my doctor"
the United States federal department that promotes and administers domestic and foreign trade (including management of the census and the patent office); created in 1913
- He never apologized for crying, but he managed a choked: "thanks, Doc, " as he carried his little friend's body home to bury him.