1.imminent risk 迫切危机
The U.N. children's Fund reports about 500,000 children in the Horn of Africa are at imminent risk of death due to malnutrition.
联合国儿童基金会报告说，非洲之角有大约50万儿童因营养不良濒临死亡的迫切危机。

2.range throughout 一片
They range throughout sub-Saharan Africa and the rain forests of central and West Africa.
他们主要散布在撒哈拉沙漠以南地区，以及非洲中部和西部的热带雨林一带。