negatived

例句:

• The deep mud negatived all the efforts to advance.
  这路太泥泞使所有前进的努力都白费劲.
  
• His experiment negatived the theory.
  他的实验驳斥了这个理论.
  
• All question of Soviet representatives coming to Cairo was thus negatived.
  因此,所有有关苏联代表团参加开罗会议的问题,都被否定了.