arsenic powder

例句：

1. 1. The chemical was used as an antidote for poisoning.
   这种化学物质被用作解毒剂。
2. 2. The doctor prescribed the medicine to treat his patient's condition.
   医生开药治疗病人的状况。
3. 3. The powder is highly toxic and should be handled with care.
   这种粉末非常有毒，需要小心处理。