noun🔗Share萘, 卫生球 A white crystalline hydrocarbon manufactured from coal tar; used in mothballs."Grandma used naphthalene to keep moths away from her woolen sweaters. "奶奶用萘丸（卫生球）来防止蛾子蛀她羊毛衫。compoundsubstancechemistrymaterialscienceChat with AIVocabulary GamePractice Reading
noun🔗Share萘, 萘烷 An aromatic bicyclic hydrocarbon, C10H8; an acene containing two fused benzene rings."My grandmother used naphthalene mothballs in her closet to keep moths from eating her wool sweaters. "我奶奶会在衣橱里放萘丸（萘烷丸），防止蛾子吃掉她的羊毛衫。compoundchemistrysubstanceChat with AIVocabulary GamePractice Reading
