They include arsenic, which can be used to kill plants and small animals.

VOA: special.2010.03.09

Arsenic is like phosphorus. He takes those two facts, plus the courage to leave blanks, and this is what he gives us.

砷和磷很像，他记住了这两点，在加上敢于留空的勇气，这就是他给我们的。

麻省理工公开课 - 固态化学导论课程节选

He says not only does arsenic belong under phosphorus, I predict that there is an element that lies below aluminum and above indium.

他认为不仅砷属于在磷下面，我预言还有一个元素,是在铝之上和铟的下边的。

麻省理工公开课 - 固态化学导论课程节选

Also,Bolivar traveled and battled extensively, in Peru and other mountainous areas where arsenic is a common mineral found in ground water.

VOA: standard.2010.06.09

All the components that make up the coffee, and all the impurities, etcetera. cadmium, heavy metals, arsenic, whatever is in your coffee.

以及所有的杂质等等，钙，重金，砷，任何在你咖啡里的东西。

麻省理工公开课 - 热力学与动力学课程节选

The best treatment available was arsenic, so that was what people reached for when they had unexplained health problems."

VOA: standard.2010.06.09

He knows that he shouldn't put arsenic under - He shouldn't put arsenic under aluminum.

他知道他不能将砷放到,他不能把砷放到铝的下面。

麻省理工公开课 - 固态化学导论课程节选

One is an arsenic-based drug that kills five percent of users.

VOA: standard.2010.04.05

Yes,arsenic. But not poisioning by political enemies, as in an assassination.

VOA: standard.2010.06.09

Arsenic was their aspirin, their common painkiller.

VOA: standard.2010.06.09