理解长句要先分析句式结构：
主语：it
谓语：points out
宾语：some of ten potential challenges
补语：是一个定义从句：which exist if the poor as well as the rich are to benefit.
所以主句：it points out some of ten potential challenges
翻译主句：.
从句：which exist if the poor as well as the rich are to benefit.
从句翻译：如果穷人和富人同时将会收益,它（ten potential challenges)就会存在.
所以综合主句和从句,并整理句式可得翻译：
它指出十个潜在挑战之中几个,如果穷人和富人同时将会收益时,这些挑战就会存在.