Open pelvic fracture is a severe trauma. Patiena condition is complex and the mortality is higher.

开放性骨盆骨折是一种严重的创伤，伤情复杂，死亡率高。

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Amnesia is a primitive, self-preservation mechanism, which comes into play when man need to protect himself or herself from some form of severe emotional or physical trauma.

健忘症是一种原始的自我保护心理，当人类需要从某种严重的感情或者是生理创伤进行自我保护的时候，它就会起作用。

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We anticipate that there might be a history of abuse or neglect, severe trauma, a fragmented and unstable family, or a pattern of substance abuse.

我们预计到，可能会有虐待史或者被忽略的创伤，一个支离破碎而风雨飘摇的家庭，或者某种物质滥用。

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After a head trauma, there may be multiple severe intraparenchymal hematomas.

CNN: Intracranial hematoma

In a 1999 article in the peer-reviewed journal Anesthesiology, Gail A. Van Norman, a professor of anesthesiology at the University of Washington, reported a case in which a 30-year-old patient with severe head trauma began breathing spontaneously after being declared brain dead.

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On the other hand, it is absolutely true that head trauma -- when severe -- can completely change a person's ability to think, feel and accurately perceive reality.

CNN: Can traumatic brain injury trigger mental health issues?