第四部分探讨了在生物学教学中进行学习策略训练的方法和途径，列举了大量教学实例。

Part IV inquires into the way of learning strategy instruction in biology teaching, with a lot of teaching examples.

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针对基于实例的产品方案设计问题，提出了一种半自动的、具有自学习功能的实例修改策略。

Aiming at the problem of case-based preliminary product design, this paper presents a semi-automatic case revisal strategy that has a self-learning capability.

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在过去20年中，学者们对于英语学习策略研究既有理论的全面阐述，也有广泛的实例研究。

In the past 20 years, scholars have paid more and more attention to the comprehensive exposition of the theories.

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