Difficultiea困难difficultadj.困难的；艰难的；(人)难对付的；不易相处的Difficulties keened their contradictions.困难使他们之间的矛盾更加尖锐化了。difficult employment of university students大学生就业难Difficultly decomposed precious metal alloys难处理贵金属合金difficult-- to-- separation iron ores难选铁矿石Difficulties mastered are opportunities won.驾驭困难就是赢得机会。difficult micturation with epidemic laryngopathy疫喉溺涩Difficult stomach esophagus regurgitation sickness难治性胃食管反流病Difficulties in Programmable Interface Chips'Teaching

1. It's not a difficult climb it should be child's play for an experienced mountaineer.
   这次攀登并不难－－对於有经验的登山运动员应是轻而易举的事。