单词	ammonium perchlorate
释义	ammonium perchlorate noun : a crystalline salt NH4ClO4 used chiefly as an oxidizer in explosives, in fireworks, and solid propellant systems for rockets Word History First Known Use 1872, in the meaning defined above
随便看	Boone booner boones boonest boong boongaries boongary boongs boonies boonieses boonless boonner boonnest boons boor boorach boordly boorish boorisher boorishest boorishlier boorishliest boorishly boorishness boorishnesses

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。