We have started selling our new products by mail-order and online ordering.

I work every day using computer communication.

A palatal consonant is produced when the middle part of the tongue contacts or approaches the hard palate.

He is an expert in medicine.

He is learning the basics of elementary learning.

He clenched his lower jaw tightly to endure the pain.

Gagaku is the ancient court ritual music of Japan.

Ecology is a field of study that investigates the interrelationships of organisms in the natural world.

In this experiment, the substance will undergo a chemical change.

This substance undergoes a chemical change when heat is applied.