She is learning the grammar of the present progressive form.

According to the law on specified alien species, the import of certain organisms is prohibited.

He is suffering from combat stress reaction.

Stoichiometry is a method for calculating the amount of substances in a chemical reaction.

Chemotransmitters play an important role in the transmission of information between nerve cells.

No chemical flavoring is used in this ramen at all.

My company specializes in the manufacture of fine chemicals.

The concept of chemical equivalent is essential for understanding chemical reactions.

She is suffering from Eating Disorder Not Otherwise Specified.