By the limitations of the existing road traffic, motor vehicle accidents often occur.

However, the postoperative complications often occur.

然而，肺癌术后并发症经常发生。

At the beginning of my internship, when these problems often occur.

在刚开始我的实习工作的时候，时常会出现这些问题。

Natural calamities often occur nearby golden section day between solar terms.

自然灾害多数出现在节气之间的黄金分割日附近。

Content abstract: complaints, is often occur in the hotel one word.

内容摘要：内容摘要：投诉，是酒店中常常出现的一个词。

Changes in job or communicative patterns often occur associated with this transit.

在此行运期，工作上的改变或沟通形式往往关联发生。

Quite amounts of accidents often occur in mining process.

煤矿在开采过程中，常常会发生很多事故。

Kinetic injuries often occur when students have their physical education classes.

在中学体育教学中，经常会发生一些运动性损伤。

In natural environment, sound signals often occur with background noise.

在自然环境中，声音信号常处于一定的背景噪声环境下。

In the construction process, engineering changes often occur.

建设项目建设过程中，常会发生工程变更。

Geological diseases often occur in the civil construction.

地质病害在土建施工中是经常发生的。

Thus, claims are often occur during construction of a project.

因此，在工程的实施过程中，索赔是经常发生的。

Hepatitis B, C and D usually occur as a result of parenteral contact with infected body fluids.

发生乙型、丙型和丁型肝炎通常是由于通过非肠道途径接触了受感染的体液。

They usually occur during stressful moments, such as when a person is in danger.

它们通常出现在压力大的时候，比如说当人处于危险中。

They usually occur along the boundaries of the thin plates that cover the Earth like an egg shell.

地震一般都在较薄的板块边缘沿线发生，而较薄的板块对地球而言就像鸡蛋壳一样。

In blasting engineering work, the influence of complicated geological conditions whiCh usually occur on blasting effect comes in many ways.

定向爆破工程中，爆区地质条件往往很复杂，因此对爆破效应的影响也是多方面的。

Osteoporosis is usually occur concomitantly with arterial calcification in elderly.

众所周知老年患者发生骨质疏松的同时常常伴发血管钙化。

BACKGROUND: Vascular complications usually occur in diseases related to obesity such as primary hypertension or diabetes.

背景：原发性高血压、糖尿病等肥胖相关性疾病往往出现血管并发症，活血化瘀法治疗肥胖症有一定疗效，据此推测肥胖与血瘀证可能相关。

Tunnel projects usually occur in city where high-rise building and elevated bridge etc have badly concentrated.

地铁工程建设多滞后修建于高层建筑、高架桥梁等已高度密集的城市环境中。

Terrible things usually occur at midnight.

可怕的事情通常在午夜发生。

The mutations usually occur in mucous malignant cancer and the mutation rate is increased significantly.

polβ基因突变多发生在粘膜性恶性肿瘤，并且突变发生频率也相对较高。