很困难

• Communications are terrible .
  联系很困难。
• It has been difficult to ascertain the correct source of origin .
  要查实材料的正确起源很困难。
• Resigning is a very difficult operation to conduct properly .
  辞职这件事，要处理得当是很困难的。
• It is difficult to gather sufficient proof to win a conviction .
  要找到足够的定罪证据是很困难的。
• He finds it difficult to climb the stairs with his bad leg .
  他发现用一条有毛病的腿上楼梯很困难。
• Communication with moscow was difficult, but possible .
  和莫斯科通信是很困难的，不过还是办得到的。
• It is difficult to determine the total number of pastoralists that exist .
  确定现有的牧民总数量是很困难的。
• Herbicides are difficult to apply horizontally over long distances .
  要在长段距离的水平方向施用除草剂也很困难。
• In practice, the method is tedious, difficult, and uncertain .
  事实上，这个方法是很费事、很困难而且是无把握的。
• Though the affairs seem easy at the first blush, they are really difficult .
  虽然这些事乍看似乎很简单，其实很困难。