temporary damage to the brain caused by a fall or hit on the head or by violent shaking脑震荡
UK He's been dizzy and confused since the accident. Do you think he has concussion?发生事故以来,他一直有点头晕和思维混乱。你觉得那是不是脑震荡?
US He's been dizzy and confused since the accident. Do you think he has a concussion?发生事故以来,他一直有点头晕和思维混乱。你觉得那是不是脑震荡?