My friend is a real dog lover, always talking about dogs.

My neighbor is a bird lover, always putting bird food in the garden.

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.

We should always remember the power of Kannon in difficult times.

I have been to Zhangjiakou.

Kazue is my best friend.