原因不明的

The reasons that a lower-pitched voice gives a man a greater chance of producing many offspring are not clear, but the researchers make several suggestions. Deep-voiced men might have more mates, healthier mates or shorter intervals between births; perhaps they start reproducing at an earlier age.

嗓音较为低沉，使男性更能有许多子-的原因不明，但研究人员有几项联想-嗓音低沉的男性或许拥有较多性伴侣-、比较健康的性伴侣或较短的生育间-；也许他们在更年轻时就开始生育。

Mental retardation is the most common developmental disability affecting 2–3% of the population, a consequence of a wide range of genetic or nongenetic etiologic factors. The cause of mental retardation remains unknown in about 50% of cases.

弱智是影响人群中2-3%人口的最普遍的发育残疾，这种病由多种基因和非基因的病因引起。50%的弱智原因不明。

Objective:To investigate the method of laparoscopic exploration and treatment of subabdominal pains with unknown causes,and raise the rate of difinite diagnosis and successful treatment.

目的：探讨不明原因下腹痛的腹腔镜探查及治疗方法，提高不明原因下腹痛的确诊率及治疗成功率。

The reasons for Marsden's sudden vilification are unclear, but, despite being exonerated of all charges, her reputation never recovered.

这些原因让马斯登突然遭受不明的诽谤。虽然尽管这些指控的证明是清白的，但她的名誉不能恢复。

Follow-up of 12 revealed that 7 patients died of disease within 3 weeks to 1 year and 4 months after diagnosis, 3 died of unknown causes, and 2, both adjuvant therapy treated botryoid RMS in young children, were alive without disease 11 and 27 years later.

所有患者都切除了胆囊，并接受了6种已知的辅助性治疗。12例患者的随访信息如下：其中7例在确诊后的3周至1年4个月内死于本病，3例死亡原因不明，另外2例葡萄状RMS的儿童，接受辅助治疗，11年和27年之后仍健在且无再发本病。

Results Fever, pneumonia with unknown causes, death with unknown causes, diseases similar the flu and numbers of patient in emergency department have been monitored in more than 80 percent of hospitals. However, the proportion of reported hematosepsis and infectious shock were 51.3% and 63.7%, respectively. Moreover, the surveillance rate of pathogen and toxicosis were lower and there was no earlywarning ability in public health emergency.

结果 80％以上医院对发热、不明原因肺炎、不明原因的死亡、流感样疾病和急诊入院人数实行了监测并能及时上报异常情况；对败血症/感染性休克监测和报告的比例分别仅为51.3％和63.7％；对病原生物和中毒的检测能力较低；对各类突发公共卫生事件没有预警能力。

Methods immunohistochememstry(s-p technique) and pathologic image semi-quantification were used to detect the expression of mmp-9 and timp-1 in endometrium of 30 unexplained infertility patients and 20 normal early pregnant deciduas and 20 normal endometrium.

目的 检测基质金属蛋白酶-9(mmp-9)和组织金属蛋白酶抑制物-1(timp-1)在不明原因不孕、正常早孕蜕膜组织和正常子宫内膜中的表达，探讨其与不明原因不孕关系。

In the matter of redaction, it allows that "for liturgical or musical or other unknown reasons, psalms may have been split up or joined together" in course of time; and that there are other psalms, like the Miserere mei, Deus Ps.

在这个问题上的编辑，它可以让说，&礼仪或音乐或其他原因不明，可能已被诗篇拆分或合并&过程中的时间；以及还有其他的诗篇，如求主怜悯美，天主丝氨酸。

Objective: This study investigated olfactory function disorder in Canadian potential AD patients through measuring the detection threshold and recognition threshold, of the potential AD patients and the matched controls by Five Odorants Test; and evaluated whether the senile plaques, neurofibrillary tangles and neuropil threads , which were the typical pathological changes of AD, presented in the olfactory mucosa of potential AD patients.

老年性痴呆中有75%为阿尔茨海默病(Alzheimer's disease， AD)，AD 是一种神经细胞退行性疾病，原因不明，临床以进行性记忆丧失和后天获得的知识丧失，病程逐渐发展直至完全丧失生活能力为特征。其病因是多原性的。尽管AD 的描述已达90 年之久，但要在早期检出此病仍是一个难题，所以，改进其临床诊断程序、途径非常重要。当今广泛用于AD 诊断的诸多标准中均未明确提及嗅觉的改变，然而众多国外文献资料表明，几乎所有的AD 患者发病早期甚至在临床前期即表现嗅觉识别阈的改变，可见对此深入研究有助于AD 患者的早发现、早诊断。

Peary was built in four and a half days.

此处的2751艘和该文后面给出的数据：开工2711艘，完成2710艘不符，原因不明；每艘自由轮的平均造价是180万美圆，后文有提及

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了