单词 nigrification 释义 nigrification rare—0.[f. L. nigrificre: see next and -ation.]‘The act of making black’ (Johnson 1755).{var l=document.getElementsByTagName("link");var r=/OED4.css$/;for(var i=l.length-1;i>=0;i--)with(l[i].href){var m=match(r);i...