卫生球

xǔ duō rén bǎ wèi shēng qiú fàng rù yī guì li yǐ fáng kūn chóng de zhù shí

许多人把卫生球放入衣柜里，以防昆虫的蛀蚀。

Many people would put camphor or naphthalene balls in the cabinet to keep the insects out of the clothes.