chigan cheongsoyong gyeonsa
dental floss
fil dentaire ; soie dentaire
치간 청소용 견사를 사용하여 이를 깨끗하게 유지하세요.
chigan cheongsoyong gyeonsareul sayonghayeo ireul kkaekkeuthage yujihaseyo.
Use dental floss to keep your teeth clean.
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