decimate
v[Tn]
(a) kill or destroy a large part of (sth) 殺死或毀壞(某物)之大部
Disease has decimated the population. 疾病使大部分人死亡.
(b) (infml 口) reduce (sth) considerably 相當程度地減少、 降低(某事物)
Student numbers have been decimated by cuts in grants. 助學(xué)金削減後, 學(xué)生人數(shù)大大減少.