Put it on a wet sponge to clean crayon off a chalk board.

湿海绵上放些小苏打可以擦掉黑板上的粉笔画。

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Squeeze onto wet hands or body sponge.

挤上湿手或身体的海绵。

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Squeeze onto wet hands or body sponge.

挤上湿手或身体的海绵。

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