often happens

• It often happens that railway traffic is suspended by a heavy snowfall
  经常发生大雪延误铁路交通的事情。
• This fumbling often happens when , in prototyping , an empty
  在原型设计中，有时仅仅为了使程序编译，编写空的
• Twists and turns are a part of life and setbacks often happen
  挫折与坎坷也是生活中的一部分，逆境时有发生。
• It often happens that a balmy morning passes into a chilly afternoon
  一个温和的上午常常转为一个寒冷的下午。
• It doesn ' t often happen here at radio watford , i can tell you
  老实说，大多数人坐在你那里的时候都会言不由衷
• As often happens , however , things didn t work out exactly as planned
  但经常出现的情况是，事情并没有完全按照计划进行。
• It is well known that scene changes often happen in our contacted video information
  实际视频应用中，场景切换经常发生。
• Chronic energy deficiency symptom is a kind of illness which often happens on atheletes
  摘要慢性能量缺乏症是运动员常见症状。
• Certainly this often happens , yet it requires an extensive circle of acquaintances
  当然这经常发生，这需要一个广泛的熟人圈子。
• Certainly this often happens , yet it requires an extensive circle of acquaintances
  当然这也不是什么稀罕事，只是需要一个广泛的朋友圈。