naphthalene ball

基本解释

A marble-sized ball, originally of camphor but now of naphthalene, stored with clothes to repel moths.
衛生球一種彈子大小的球，原本由樟腦制成，現在由荼制成，與衣物存在一起以敺除蛾子。
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In no-smoking home kitchens the two main sources of naphthalene were cooking and volatilization of camphor ball, accounting for 64% and 36%, respectively.
在不抽菸家庭廚房中，衛生球的揮發、烹調對萘的貢獻率分別爲36%，64%；
Additionally, the high level of Naphthalene were considered with the increasing motor -driven vehicles and the use of camphor ball in hotels and in families in Xiamen City.
另外廈門海區水躰中萘含量與以前相比很高，通過對比判別，認爲與廈門地區日益增多的機動車、居民與賓館大量使用樟腦丸有一定關系。