propham

例句：

1. 1. The poisonous snake bit him on the leg.
   这条有毒的蛇咬了他的腿。
2. 2. The doctor prescribed a toxin to treat his illness.
   医生开了一种毒素来治疗他的病。
3. 3.Poisoning is a serious threat to public health.
   中毒对公共卫生构成严重威胁。