a problem

• It is a problem that beats even the experts .
  它是一个连行家也感到棘手的问题。
• Physical deterioration of adsorbent is not a problem .
  不存在吸收剂物理退化问题。
• Such a problem has never arisen within my recollection .
  我不记得有过这样的问题。
• Do not hesitate to tell us if you have a problem .
  你有问题就直截了当地告诉我们。
• It was a problem for which he was quite suited .
  这个苦差叫他来当，倒真是找对人了。
• This is a problem where calculus won't help at all .
  对于这一题，微积分一点也用不上。
• Yet the act of transfusion itself remained a problem .
  然而转输的方法本身仍然是一个问题。
• The analysis of a problem is the basic point for its solution .
  分析问题是解决问题的基点。
• Industrial effluent often causes a problem to people 's health .
  工业废水常常危害人们的健康。
• Orders won't be a problem .
  命令不成问题。