official document
n. 公文, 官方文件
例句与用法：
Let me see all the official documents concerning the sale of this land.
让我看看买卖这块土地的所有官方文件。
An official document issued by an allied foreign government to a ship, especially a neutral merchant ship in time of war, authorizing it to enter and travel through certain waters freely.
中立船证由联盟的外国政府颁发给船只的一种官方文件，尤指战时授权中立商船在特定水城内自由进出和航行的文件
He leaves official document in his car.
他将官方文件丢在他汽车里。
词形变化：
副词: officially | 名词: officialdom |