falloff
n. 下降,减少;分开;减退
例句
The falloff in passing rates occurred statewide.
过关率的下降在整个州内都广泛存在。
If there is a further falloff in ticket sales, the play will close.
如果门票销售进一步下跌,这个剧目就会停演。
Reflections, Refractions and depth I made through the use of falloff maps.
使用衰减贴图制作出反射、折射和深度。