例句與造句

1. Osmium is very difficult to work with, but he developed a new method which mixed osmium oxide powder with rubber or sugar into a paste, which is then squeezed through a nozzle and fired.
2. I read the articles osmium and iridium but, while their density is excellent for my purpose, they are cost-prohibitive and, to make matters worse, osmium oxide is said to be very toxic.
3. It's difficult to find osmium oxide in a sentence. 用osmium oxide造句挺難的