50 learners practiced this character


Sulfur dioxide emitted from factories is one of the main sources of air pollution.
Enjoying HanziStroke?$24.99 one-time· Unlimited practice· No ads Learn more →
After vulcanization, rubber becomes more elastic.
Volcanic eruptions release large amounts of sulfur dioxide.
Volcanic eruptions release sulfur gases.
Sulfuric acid is a highly corrosive chemical.