- (
computing 计算机 digital object identifier(a series of numbers and letters that identifies a particular text or document published in electronic form on the internet)Topics Phones, email and the internetc2数字对象识别码（用以识别在互联网上发表的电子文本或文档的数字和字母序列） - Department of the Interior(the US government department responsible for protecting the country’s environment)
（美国）内务部（负责国内环保事务） CultureThe DOI's divisions include the National Park Service, the Bureau of Land Management, the Fish and Wildlife Service and the Geological Survey. It is also in charge of government programmes for Native Americans.