名词
中文翻译：Unknown
同义词：
['activated whiteboard', 'activated charcoal', 'activated carbon']
例句：
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1. The teacher used the activated chalk to write on the blackboard.
老师用激活粉笔在黑板上写字。
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2. The student used the activated chalk to highlight important points in the textbook.
学生用激活粉笔在教科书中突出重要点。
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3. The engineer used the activated chalk to mark the dimensions of a machine part.
工程师用激活粉笔标记机器零件的尺寸。