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When we have a meal or drinking, it is often occurred that we may carelessly splash the oil or colored drinks onto the clothes. This is a kind of mini washing machine design. In case of the above-mentioned situation, we can stuck the smearing part of clothe under the cap and twirl the cap, enabling the washing powder enter into the bottle through the hole under the cap. And then, shake the bottle un and down, cleaning the smearing part trough the striking of the small ball onto the clothe.