decrement
noun [ C ] formal uk/ˈdek.rə.mənt/ us/ˈdek.rə.mənt/
消耗，递减，减缩
a reduction; a lower level or amount
Babies born to women living within a two-mile radius of ground zero showed significant decrements in birth weight and length. 生活在世贸中心遗址两英里半径范围内的妇女所生的婴儿在出生体重和长度方面显著下降。