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The making of video games involves yearly advances in the arrangement and physics of interactive worlds.

视频游戏的制作要涉及到提前安排交互世界里的互动。

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Physics-education research (PER) has shown that interactive learning strategies significantly improve student understanding.

物理学教育研究（PER）表明，互动学习策略可以明显地提高学生的理解能力。

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Jeff teaches chemistry, physics, and engineering, and works to create accessible, interactive lessons that help convince kids that the science classes most students consider hardest are worth diving in to, not running away from.

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