Chronic renal failure presents multiple difficult problems in the absence of adequate medical treatment despite all efforts to date.

所有努力成果迄今，在缺乏医学治疗的情况下，慢性肾衰竭会引起多样困难的问题产生。

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Chronic renal failure presents multiple difficult problems in the absence of adequate medical treatment despite all efforts to date.

所有努力成果迄今，在缺乏医学治疗的情况下，慢性肾衰竭会引起多样困难的问题产生。

youdao