名词
中文翻译：黑板
同义词：
['blackboard', 'whiteboard']
例句：
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1.The teacher is using a blackboard to explain the math problem.
老师正在用黑板解释数学问题。
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2. The student needs to use the whiteboard to write down their notes.
学生需要使用白板写下他们的笔记。
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3.The students are practicing their writing skills on the blackboard.
学生们正在练习在黑板上写字。