原因

• He lied about his reasons for being late .
  他谎报了迟到的原因。
• I left my job on medical grounds .
  我由于健康原因而辞去了工作。
• She turned over in her mind possible reasons .
  她挖空心思设想可能的原因。
• This proved to be his undoing .
  这种情况后来成了他垮台的原因。
• The immediate cause of death is unknown .
  死亡的直接原因不明。
• She explained her conduct to her boss .
  她向老板说明了自己那种表现的原因。
• This is not possible for a number of reasons .
  种种原因表明，这是不可能的。
• It 's difficult to assign any reason for the failure .
  失败的原因很难确定。
• Cavitation can be caused by a variety of reasons .
  气穴可以由各种原因引起。
• He had to fasten it upon something .
  他好歹总得去找个原因吧。