subtract/səbˈtrækt; səb`trækt/ v[Tn, Tn.pr]~ sth (from sth) take (a number or quantity) away from (another number, etc) 从（某数等）中减去（某数或量）: subtract 6 from 99 减 6 6 subtracted from 9 is 3, ie 9639 减 6 等於 3. Cf 参看 add, deduct.
牛津英汉双解词典