Communication Teaching Method has three main principles about learning: communication, task and meaning.

交际法关于学习的三个原则是沟通原则、任务原则、意义原则。

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Walzer holds that there are different distributive principles in different areas of social goods in which stand such three main principles as free exchange, deserving and needs.

沃尔泽认为不同的分配领域有不同的分配标准，由此提出正义三原则即自由交换、应得和需要。

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This paper introduced three main methods of determining the volume of glue, the working principles and characteristics of three methods were analysed and compared. Some proposals were presented.

介绍了当前我国刨花板生产中测定胶液流量的三种主要方法，分析比较了这三种方法的工作原理和工作特点，最后进行了总结并提出了建议。

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On a strategic level, Netanyahu and Likud have made clear that they stand for three main principles.

CENTERFORSECURITYPOLICY: Netanyahu's grand coalition

Though oil is a sensitive topic for many Mexicans who learn state ownership is one of the three main principles of the constitution, its production has fallen year after year.

NPR: Mexico's Ruling Party Says 'Yes' To Energy Reform