Learners hold the knowledge points as the unit to learn knowledge.

学习者是以知识点为单位来学习知识的。

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If you press and hold, the screen will raise or lower fully, so you have full control of how you want the unit to respond.

如果你按住，屏幕将全面提高或降低，所以你有你想要的单位如何响应的完全控制。

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If you press and hold, the screen will raise or lower fully, so you have full control of how you want the unit to respond.

如果你按住，屏幕将全面提高或降低，所以你有你想要的单位如何响应的完全控制。

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