DC
/ˌdiː ˈsiː/ 7DC is used to refer to an electric current that always flows in the same direction. DC is an abbreviation for . 直流电
noun [专属名词]abbr. 直流电（direct current）；哥伦比亚特区（District of Columbia）；从头重复（da capo）
Join a small group bike tour for an evening of exploration in the heart of Washington DC.
参加一个小型的团体自行车之旅，探索华盛顿特区的核心地带。
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