caustics

例句：

1. 1.The researcher conducted a study on the toxicology of various plants.
   这位研究员对各种植物的毒性进行了研究。
2. 2. The doctor prescribed a medication that had high toxicity for her patient.
   医生给她的病人开了一种有毒的药物。
3. 3. The factory released a large amount of poisonous gas into the air.
   工厂向空气中释放了大量有毒气体。