He was set to participate in a reeducation program.

He was to be reeducated.

Oocytes play an important role in the reproduction of organisms.

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.

The Daijōsai is an important Shinto ceremony in Japan.

We celebrate Independence Day every year.

I plan to spend this year's Christmas with my family.

This secondary burial grave is believed to have been used by ancient people to honor the dead.