difficult-to-handle造句

Environmental managers around the world are working very hard to look for effective ways of predicting the environmental impacts of human activities in order to minimize or mitigate such impacts before they become difficult - to - handle problems . however , environmental issues are becoming more complex and the methods of assessment are rapidly evolving
从事环境保护工作的人都期望能准确评估人类活动对环境的影响，以将这类影响减至最低，避免对环境带来负面影响。但现在有关环境的议题日趋繁复，而评估环境的方法也日新月异，从事环境保护工作的专业人士急切需要一个可以互相交流意见的地方。
It's difficult to find difficult-to-handle in a sentence. 用difficult-to-handle造句挺难的