a century means_?

Using a washing machine means_(use)as washing by.. century A. century a century=（ ）years How many years make a century? One _______ years is a century(世纪). a quarter-century on什么意思 求电子书:A Quarter Century of Unix A century means one h_______ years. three quarters of a century是什么意思 There are ____ in a century. One （ ）year is a century