名词
中文翻译：粉笔
同义词：
['chalk', 'chalk dust例句：1. The teacher used a pinta to write on the blackboard.（老师用粉笔在黑板上写字。）']
例句：
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1. The teacher used a pinta to write on the blackboard.
老师用粉笔在黑板上写字。
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2. The students gathered around the teacher to watch him use pintas to illustrate a math problem.
学生们围在老师身边，看他用粉笔解释一个数学问题。
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3. After class, the teacher wiped off the pinta and handed out the next lesson's materials.
课后，老师擦掉粉笔并分发下一节课的材料。