Macrophages play a role in taking in and breaking down foreign substances in the body.

He was set to participate in a reeducation program.

He was to be reeducated.

Oocytes play an important role in the reproduction of organisms.

This case is outside of our jurisdiction.

He was sprayed with tear gas during the demonstration.

The use of renewable energy helps protect the global environment.

The umbilical vein plays a crucial role in transporting nutrients and oxygen to the fetus.

We will make the maximum effort for the success of this project.

The Daijōsai is an important Shinto ceremony in Japan.