n. refractoriness ; obstinacy
Objective To study the clinical features and prognostic factors of patients with relapsing or refractory multiple myeloma(MM).
目的探讨难治复发性多发性骨髓瘤(multiple myeloma,MM)患者临床特点及预后因素。
·2,447,543篇论文数据，部分数据来源于NoteExpress
双瘫性脑瘫很难治疗。
The diplegic cerebral palsy is hard to treat.
youdao
这就说明了为什么癌症这么难治愈。
This helps to explain why cancers are so hard to deal with.
而且，耽搁得越久，越难治愈。
Also, the longer the problem goes ignored, the more difficult it is to treat.
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