The use of this machine is simple.

This is a kind of flower.

Acrylamide is a type of chemical, especially used in the manufacture of plastics.

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

This plastic toy is very durable.

We are working on the manufacturing of new products.

We are building a factory to manufacture new products.

This computer can be used by anyone.

He is majoring in chemistry at university.

What is this material made of?