A concussion is an injury that happens when the brain is shaken inside the skull.
A concussion is an injury that happens when the brain is shaken inside the skull.
脑震荡是当脑子在颅骨中被震动时所造成的伤害。
A concussion is an injury that happens when the brain is shaken inside the skull.
脑震荡是当脑子在颅骨中被震动时所造成的伤害。