单词	premetallic
释义	premetallic adjective pre·​metallic ¦prē+ : previous to the knowledge of the use of metals Word History Etymology pre- + metallic
随便看	ululation ululations Uluru ulus ulva Ulvaceae ulvaceaes ulvaceous ulvae Ulvales ulvaleses ulvalesses ulvas ulvophyceaes Ulyanovsk Ulyssean Ulysses ulysseses ulyssesses um um af um alkaloid um an um con um cum dig

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。