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- The etiology is not known. 其病名尚不明。
- Crohn's disease and ulcerative colitis, collectively known as inflammatory bowel disease (IBD), the etiology is not clear, but its pathogenesis has had more understanding. 摘要克罗恩病和溃疡性结肠炎统称为炎症性肠病(IBD)，病因虽不明确，但对其发病机理已有了较多的了解。
- The market situation is not known to us. 我们还不了解市场情况。
- Crohn's disease and ulcerative colitis,collectively known as inflammatory bowel disease(IBD),the etiology is not clear,but its pathogenesis has had more understanding. 克罗恩病和溃疡性结肠炎统称为炎症性肠病(IBD),病因虽不明确,但对其发病机理已有了较多的了解。
- The etiology of CNP/CPPS is not understood. 慢性无菌前列腺炎/慢性骨盆痛的病原学是不知道的。
- The nature of his business is not known. 他的企业性质别人不知道。
- The function of the albumen cells is not known. 白蛋白细胞的功能尚不清楚。
- Etiology is not an independent prognostic factor. 病原学不是一个独立的预测指标。
- The etiology of BBE, which is not known exactly, may be related with the autoimmune damage after viral infection. The course of the BBE was monophasic and benign. Corticosteroid treatment is effective and the prognosis is favorable. 脑干脑炎病因不明,病原学常难以明确,推测是病毒感染后自身免疫损伤所致,呈单相良性病程,激素治疗有效,预后良好。
- The cause of gender identity disorder is not known. 引起性别错位症的原因尚不清楚。
- The exact date of his birth is not known. 他确切的出生日期无人知道。
- The cause of the crash is not known. 不知道肇事原因。
- The exact origin of the word April is not known. april(四月)这个词的确切来源并不为人所知。
- It is not known what causes the disease. 这种病的起因不明。
- The prevalence in younger children is not known. 至今不知小年龄儿童的发病率。
- It is not known whether or not the news is true. 这个消息不太保准。
- Do not know: the person's function is not clear. 不详:这个人物的作用不清晰。
- The etiology is still obscure, but repeated minor-trauma is believed to be the main predisposing factor. 尤其是在作阻抗性拇指伸直、外展时，或作芬克司汀测试时会更痛。中年妇女为最常见的受害者。
- The etiology is unknown.The mode of genetic transmission in idiopathic multicentric osteolysis and its association with nephropathy are variable. 其特徵为渐进且广泛的溶骨变化，最常从腕骨及附骨开始发生，通常没有炎症反应伴随。
- It is not known who busted up Sam and his wife. 大家不知道是谁使萨姆和他的妻子分离了。
