Three misprints occur on the first page.

Most infant deaths and hospitalizations now occur in the first two months of life.

现在，因百日咳死亡或住院的婴幼儿大部分发生在头两个月。

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Many words that occur in the first edition are used in new senses and enter into new compounds.

第一版中的许多词现已用于新义并复合成新词。

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Three quarters of all newborn deaths occur in the first week of life.

所有新生儿死亡中有四分之三发生在生命第一周。

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Technically, this step need not occur first, but it needs to occur early; it should be obvious that you should create the database before any application code, even automatically generated code.

技术上这个步骤不必最先进行，不过需要在早期完成；应该在编写任何应用程序代码（甚至是自动生成的代码）之前创建数据库，这应该是显然的。

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The read-first technique involves refactoring ( or writing) the application logic and workflow so that all processing and read operations occur first, outside of a transaction's scope.

先读取技巧涉及重构（或编写）应用程序逻辑和工作流，以便所有的处理和读取操作在事务作用域的外部首先发生。

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Conclusions: In diabetic retinopathy, the changes in vascular morphology occur first, and the expression of growth factor follows.

结论：糖尿病视网膜病变时血管器质性改变在先，而生长因子表达在后。

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Or services that the process invokes and invoke the process ( where either may occur first).

或者既由流程调用又调用流程的服务（首先出现哪种情况都有可能）。

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Corpus-based study shows that chunks are universal and occur frequently in language.

基于语料库的研究表明，语言中普遍存在着重现率很高的语块。

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However there remains a serious problem on school safety, Accidents occur frequently on campus.

然而，近年来，我国校园安全问题依然严重存在，校园安全事故频频发生。

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Road traffic accidents occur frequently, which caused serious personal injury and economic losses.

道路交通事故频繁发生，给人们造成了严重的人身伤害和经济损失。

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In recent ten years, accidents induced by fire and explosion occur frequently.

近十年来，国内外火灾和爆炸事件时有发生。

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If such events occur frequently, the trace may significantly impede performance.

如果此类事件频繁发生，则跟踪可能会显著地降低性能。

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Since the 1990s, the infringement cases occur frequently.

因而自上世纪90年代以来，商号权侵权案件即时有发生。

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Such integration should occur frequently throughout the day.

这样的集成在一天当中应该频繁地进行。

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Sudden public incidents occur frequently to China in the profound transition.

处于深刻转型期的中国突发公共事件频繁发生。

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With the forest tourism develops rapidly, accidents occur frequently.

森林旅游迅速发展的同时，安全事故频频发生。

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In this case, intellectual property infringements may occur frequently.

在这样的情况下，就很可能出现知识产权侵权情况。

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Social problems and social conflicts occur frequently because China remains in the social transition.

中国正处于社会转型期，社会问题和社会矛盾频繁发生。

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In recent years, campus PE Injury Accidents occur frequently.

近年来，我院体育伤害事故不断发生。

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At the same time, the fire accidents occur frequently.

与此同时火灾事故也频频发生。

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