naphthalene ball

基本解释

A marble-sized ball, originally of camphor but now of naphthalene, stored with clothes to repel moths.
卫生球一种弹子大小的球，原本由樟脑制成，现在由荼制成，与衣物存在一起以驱除蛾子。
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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.
在不抽烟家庭厨房中，卫生球的挥发、烹调对萘的贡献率分别为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.
另外厦门海区水体中萘含量与以前相比很高，通过对比判别，认为与厦门地区日益增多的机动车、居民与宾馆大量使用樟脑丸有一定关系。