He is a teacher at a New Hampshire high school where learning is not something of books and tests and mechanical memorization, but practical.

他是新罕布什尔一所高中的老师，在那里，学习不是书本、考试和机械记忆，而是实践。

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Since you have spent so much effort learning this new language, it is sensible and practical to learn the politeness rules also.

既然你已经花了这么多的精力去学习这新的语言，这是明智和实际的学习礼貌规则。

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This paper constructs a new practical distance learning system that is low cost and high speed by the means of satellite LOG combining with ground connection well.

该文从实际出发，通过卫星通信线路和地上线路的有机结合，构筑了低成本、高速率的基于卫星的远程教学系统，并在其上进行了模拟教学实验。

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