concussed（形容词，常作表语）：脑震荡的；因头部受到撞击而短暂出现眩晕、意识模糊或记忆受损的。
（也可泛指“被撞得晕乎乎的”。）
/knkst/
He was concussed after the fall.
他摔倒后出现了脑震荡。
Although she seemed fine at first, the doctor suspected she was concussed because she couldn’t remember the accident clearly.
虽然她起初看起来没事，但医生怀疑她有脑震荡，因为她无法清楚回忆事故经过。
来自拉丁语 concutere，意为“猛烈摇动、震动”（con- “一起/加强” + quatere “摇动/敲击”）。因此 concussed 字面上带有“被强烈震动过”的含义，现代多用于医学语境，特指头部撞击后的脑震荡状态。
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