difficulty是什么词?

difficulty 名词是什么?joy同义词是什么?need同义词是什么?peaceful difficulty是什么意思 I had difficulty walking back to my classroom.这句话是什么句型?请解释 work out是接plan ,solution 还是接PROBLEM,DIFFICULTY 求具体用法是什么? 这是什么句型 he had great difficulty in ___(control) the car difficulty是什么词性 按适当形式填空：He has_ (difficult) doing difficulty in 与difficulty to 的区别 求助英语1 fish drink food chance difficulty study 这些词何时可数何时不可数?2 policy,difficulty是不可数? lower difficulty什么意思 have difficulty 搭配 difficulty是什么意思?rules是什么意思?