More than half of these deaths occur in sub-Saharan Africa and one third occur in South Asia.

Background The term "oral mucosal disease" is the general name applied to indicate various types of diseases which occur in the oral mucosa and soft tissues.

背景口腔粘膜病是指发生在口腔黏膜、软组织上的类型各异，种类众多的口腔疾病的总称。

According to the traditional Chinese medicine ( TCM) theories, it is good to tread diseases which occur most likely in wintertime in summer.

遵照中国中医的理论。夏天是治疗发生在冬天疾病的最佳时候。

Detecting cases of diseases that occur endemically may be interpreted ( because of absence of background data) as an early epidemic.

检测到的地方性流行性疾病病例可能会被解读（由于缺少背景数据）为灾后流行疾病的趋势。

If the self tolerance is broken or blocked by some reasons, autoimmunity and some diseases might occur.

若自身耐受因某些原因遭到破坏或中止时，就可能发生自身免疫反应或自身免疫病。

Cases of uveitis that are associated with diseases may occur frequently over a long period of time.

葡萄膜炎的案件有关联的疾病，可能会出现经常超过一段很长的时间。

Once this balance has been destroyed, a variety of blood diseases may occur.

一旦这种平衡遭到破坏，则可能出现各种各样的血液系统疾病。

It is important to identify any and all diseases that occur.

重要的是应当对发生着的任何一种和所有的疾病作出诊断。

Background Both clinical and experimental observations suggest that a number of autoimmune diseases occur more frequently in females than in males, such as a female-to-male incidence ratio of rheumatoid arthritis, systemic lupus erythematosus and autoimmune thyroiditis was 1:3, 1:9, 1:19 respectively.

研究背景临床和实验研究发现，某些自身免疫性疾病如类风湿性关节炎、系统性红斑狼疮和甲状腺炎男女发病比例分别为1：3、1：9、1：19，呈现明显的性别差异；

With the increase of service life and traffic volume, and overloading, more and more diseases occur in existing bridges to some extend. If not inspected and reinforced timely, it will affect the normal service ability and even cause traffic accidents.

随着使用时间的增长，交通运输量的增加，甚至超载车辆的通行，既有桥梁会产生损伤病害，如果不及时进行检测和加固，将会影响交通的顺畅甚至造成安全事故。

The hepatic diseases occur frequently in clinical practice. Many drugs used for hepatitis, liver fibrosis, cirrhosis and hepatoma clinically no organ selectivity, which lead to low drug concentration in liver.

肝脏疾病是临床上的常见病和多发病，用于治疗肝炎、肝纤维化、肝硬化和肝癌等肝脏疾病的药物虽有一定疗效，但无组织和器官选择性，肝药浓度不高，全身副作用大。

And when febrile diseases occur, Yin and Yang should be differentiated not only according to the pulse-taking but also the symptoms of diseases caused by exopathogen.

伤寒发病时不但依据脉诊，而且要重视以外感病的证候来辨阴阳。

When multiple etiologies in some diseases occur at the same time, we should differentiate of diseases and syndrome according to the incidence, primary and secondary successively and mutual relations.

当多种病因在某种疾病中同时出现时，应按发病先后、主次和相互关系，从整体分析病机（必先五胜），进行病证鉴别。

Due to design, construction, geological condition as well as tunnel structures, management work is required for built expressway tunnels and such tunnels in which diseases occur require reinforcement.

由于设计、施工、地质条件和隧道结构本身的原因，高速公路隧道在建成后需要进行管理，产生病害的隧道需要进行加固；

Whereas the farmland protection forest pests and diseases occur yearly, which seriously endanger the normal growth of crops, resulting in ecological shelter lost its function.

但是农田防护林病虫害连年发生，严重危害了农作物的正常生长，致使防护林失去其应有的生态作用。

Conclusion It's a safe and effective method to cure Rh haemolysis disease by Rh positive blood exchanging when emergent diseases occur.

结论在病情紧急时，用Rh阳性血换血治疗，是一项安全有效的替代措施。

Many hinges in human body are the regions where the diseases occur easily is similar to there are many traffic accidents in main roads.

像许多交通要道容易出现交通事故一样，人体的许多枢纽部位也是疾患多发区。

In the large-scale epidemic diseases occur frequently day, people of various countries public healthy safety have accepted the enormous threat.

在大规模流行性疾病频频发生的今天，各国人民的公共健康安全受到了巨大的威胁。

Nearly half of all cardiovascular disease events occur in people without elevated blood cholesterol or lipid levels.

几乎一半患有心血管疾病的人群血浆胆固醇及血脂水平并无升高。

My experience then – and since – has reinforced my sense that events occur within a continuum.

我在当时以及之后的经验加强了我的感觉：大事的发生具有连续性。

Rectifying tower has one pivotal function in the chemical production, where abnormal events occur from time to time.

精馏塔在化工生产中有着举足轻重的作用，故障也时有发生。