diminution
/ˌdɪmɪˈnju:ʃn; ?@ -ˈnu:ʃn; ˌdɪmə`nuʃən/ n
(a) [U] diminishing or being diminished; reduction 变小; 变少; 缩小; 减少; 缩减
the diminution of one's resources 资源的减少.
(b) [C] amount of this; reduction 缩小量; 减少量
hoping for a small diminution in taxes 希望税捐略微减少.