To this end, WHO has developed, together with UNICEF, a range of infant and young child feeding counselling courses and job AIDS for use by health care workers and lay counsellors.
为此，世卫组织和联合国儿童基金会一起设计了一系列婴幼儿母乳喂养咨询课程和工作指导，供卫生保健工作者和咨询员使用。
By the end of this tutorial, you'll understand how to define lexical elements, write yacc rules, and use the rule mechanism to build and define a range of different parsing engines and applications.
在学习了本教程之后，您将了解如何定义词法元素、编写yacc规则，并使用相应的规则机制来构建和定义各种不同的分析引擎和应用程序。
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