This ancient document states that ancient people considered the marrow an important part.

This ancient document states that ancient people considered the marrow an important part.

This ancient artifact is very valuable.

It is very interesting to learn about ancient history.

It is important to understand the importance of health.

In French, the partitive article plays a very important role.

The greater part of the time is spent on work.

This project was partially successful.

When the myelin sheath of nerve cells is damaged, nerve transmission slows down.

The doctor performed a spinal tap to collect cerebrospinal fluid.