These he had boiled down into a yellow liquid quite unknown to science, which was probably the most virulent poison in existence. 他把这些毒草熬成一种黄色的液体,什么科学家都没有见识过的,大概是世界上最毒的一种毒药了。
These decomposition products often contain virulent poison, even trace, it can make up of a serious threat to the lives and safety of the staff entered the room. 这些分解产物中往往含有剧毒,即便是微量,也会对对进入室内的工作人员的安全和生命构成严重威胁。