a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
同义词：arsenic??/??arsenous anhydride??/??arsenous oxide??/??white arsenic??/??ratsbane
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。