difficulty可数与不可数

overcome numerous difficulties战胜无数的困难；战胜无数困难
To Overcome These Difficulties克服这些困难
overcome the difficulties克服困难
overcome certain difficulties克服某些困难
overcome current difficulties克服目前的困难
Overcome Various Difficulties克服各种困难
Overcome All Difficulties度一切苦厄
Overcome Technical Difficulties攻克技术难关
Overcome Many Difficulties战胜种种困难

difficulty既是可数名词，也是不可数名词。
1，表示“具体的难题”，“困难的事情”或“难处”时，是可数名词。如：I met with two difficulties in finding the job./ Everyone has a lot of difficulties in his life.
2，在下了短语中，做不可数名词：
have difficult...