prolonged course of disease
prolonged course of disease
病程延长
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The mortality of children with severe complex brain injuries is very high. The course of the disease is emergent, dangerous, heavy and prolonged.
小儿特重型复合性颅脑损伤病死率很高，病情急、危、重，并发症多、病程长。
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