详细解释:【化】 三氧化二砷
【医】 三氧化二砷, 白砷, *
英语解释：
名词 arsenic trioxide:
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