Emphasizing meaningful learning and meaningful practice at the basis of comprehending the linguistic knowledge and rules;

在理解语言知识和规则的基础上操练外语，强调有意义的学习和有意义的操练；

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According to the principle of communicative language learning, meaningful practice activities should have the following characteristics: (1) The use of language scenarios;

根据语言学习的交际性原则，有意义的练习活动应具备以下特征：（1）有语言使用的情景；

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Before changing clinical practice, meaningful studies addressing utility, outcomes and cost-effectiveness need to be conducted.

在改变临床实践之前，我们需要对它进行更有意义的效用，结果和性价分析。

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They want a meaningful ban on the practice of shark finning, which involves a shark's fins being removed before the rest of the animal is thrown back into the ocean to die.

BBC: RELATED BBC SITES

So, in practice, fiscal policy is unlikely to be able to provide meaningful stimulus over the term of the next government.

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As FDA recruits more of its clinical review staff out of the ranks of medical practice and from academic postings, a declining proportion of the staff have meaningful experience in actually developing new drugs.

FORBES: FDA Gets a New Regulator