Until now the site in Nevada has never appeared on official maps or satellite images.

直到目前，这个位于内华达的地点从未在官方地图或卫星图片上出现。

Although Sudan continues to claim it and shows it marked as being a part of Sudan on all official Sudanese maps.

不过苏丹继续宣称对它的主权，并在所有苏丹官方地图上标明它是苏丹的一部分。

In the fourth place, titles to lands bought by individuals remained uncertain in the absence of official maps and records.

第四，在没有官方地图和记录的情况下， 个人购买的土地所有权仍然不确定。

China has announced plans for an inhabited South Pole station by the 2030s, and the United States has an official road map seeking an increasing number of people living and working in space.

中国宣布了到 2030 年代建立一个有人居住的南极站的计划，而美国也有一份官方路线图， 旨在让更多的人在太空中生活和工作。