区别辨析complexity与complication

这两个名词均含“复杂”之意。

complexity : 着重指极度复杂而难于辨认的关系。

• a problem of great complexity
  极复杂的难题
• the increasing complexity of modern telecommunication systems
  日益复杂的现代电信系统
• I was astonished by the size and complexity of the problem.
  这个问题的复杂性和涉及面之广使我感到惊讶。

complication : 指纷乱复杂到令人难于理解的地步。

• Dave couldn’t find his passport at the airport and then there were further complications when Fiona lost her baggage.
  戴夫在机场找不到护照了，而后事情越发麻烦，菲奥娜又把行李给丢了。
• If any complications arise, let me know and I’ll help.
  如果发生什么麻烦事，告诉我一声，我会帮忙的。