concussion
n[C, U]
(a) injury to the brain caused by a blow, violent shaking, etc, resulting in temporary unconsciousness 腦震蕩
The patient is suffering from severe concussion following a blow to the head. 患者頭部受擊後患嚴重腦震蕩.
(b) violent shaking or shock (caused eg by a blow, an explosion, etc) 猛烈的搖動或震動(如因撞擊、 爆炸等所致)
a mighty tremor followed by minor concussions 巨大的震動及隨後的輕微震蕩.