名词
中文翻译：粉笔灰
同义词：
['whitewash', 'chalk dust例句：1. The teacher used pastel chalk to draw the picture on the blackboard.（老师用粉笔在黑板上画了一幅画。）']
例句：
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1. The teacher used pastel chalk to draw the picture on the blackboard.
老师用粉笔在黑板上画了一幅画。
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2. The children were playing with pastel chalk in the park.
孩子们在公园里用粉笔玩耍。
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3.The artist used pastel chalk to create a beautiful landscape painting.
艺术家用粉笔创作了一幅美丽的风景画。