短语讲解：
1. The group, also known as MSF, says more than 30,000 of the refugees are in a camp in the village of Doro in Upper Nile State.
known as被认为是，被称为
例句：Radio, television, newspapers and magazines are known as the mass media.
广播、电视、报纸和杂志被称为大众传媒。
2. In addition, many of the refugees have chronic health problems, indicating they did not have access to health care in Blue Nile State.
have access to接近（或进入）的方法（或权利、机会等）
例句：Students must have access to good books.
学生应该读得到好书。
3. Doctors Without Borders is setting up a water treatment unit there.
set up建立，建造, 创立, 竖立
例句：Plenty of foreign firms have set up factories here.
很多外国公司已在这里开办工厂。
4. Drinking water is also in short supply in Doro.
in short supply供不应求
例句：Food is in short supply.
食物供应不足。
