1. 脑震荡：脑震荡(concussion)是头部创伤后暂时性意识丧失. 其发生可能与中脑旋转所致网状系统一过性功能障碍有关. 一般无明显的结构变化. 必须指出的是,临床医生单凭症状作脑震荡的诊断须相当慎重. 不少有脑震荡脑史的患者,

2. concussion的解释

2. 震荡伤：部伤、胸背部伤、腹腰部伤、骨盆伤、脊柱脊髓伤和四肢伤等.创伤分类按皮肤的完整性分为: 闭合伤closed injury:皮肤保持完整无开放性伤口者.如挫伤(contusion)挤压伤(crush injury) 、扭伤(sprain)、震荡伤(concussion)、闭合性骨折和闭合

3. 振荡,振动：concurrent 同时的,并行的 | concussion 振荡,振动 | concussor 振荡按摩器

1. 脑震荡
    If you suffer concussion after a blow to your head, you lose consciousness or feel sick or confused.

    e.g. Nicky was rushed to hospital with concussion...
           尼基因脑震荡被火速送往医院。
    e.g. She fell off a horse and suffered a concussion.
           她从马上摔下来，造成了脑震荡。

1. any violent blow

2. injury to the brain caused by a blow
    usually resulting in loss of consciousness