Ordinary household trash has noxious metals and chemicals, such as the mercury in mirrors and fluorescent lights and the chemicals left in pesticide spray cans.
在家庭垃圾中，不乏對人體有害的重金屬、化學物質，如日光燈管和鏡子含有水銀；殺蟲劑空罐殘留有化學藥劑。