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importance
It is important to understand the importance of health.
(chemistry) organic solvent
Organic solvents play an important role in chemical reactions.
chemical weapon
The use of chemical weapons is prohibited by international law.
analytical chemistry
Analytical chemistry is a science that reveals the composition and structure of substances.
physical chemistry
I am majoring in physical chemistry at university.
(chemistry) a chemical reaction
This chemical reaction is very dangerous.
inorganic chemistry
I am majoring in inorganic chemistry at university.
chemical engineering
My major is chemical engineering.
biological chemistry
I am majoring in biochemistry at university.
chemical fiber
This shirt is made of chemical fiber.
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