concussions

例句:

• People who have concussions often trouble thinking or remembering.
  患脑震荡的人通常存在思考和记忆障碍.
  
• Concussions also make a person feel very tired or angry.
  脑震荡也会使人感觉疲倦或愤怒.
  
• They say concussions also may take longer to heal among young people.
  他们认为年轻人患脑震荡或许需要较长时间才能治愈.
  
• The ocean rose and fell with prolonged concussions.
  来自R. Bradbury
• Rugby, lacrosse, baseball: concussions are seemingly epidemic everywhere.
  来自NEWYORKER
• But their punishing high-speed hits come with an added risk of sustaining concussions.
  来自SA