He left the country before the Iron Curtain fell.

He pulled the stage curtain.

The membrane of this cell is very thin.

Wheat is an important ingredient for making bread.

Japan during the Edo period was governed by the shogunate.

On New Year's Eve, you can hear the sound of firecrackers.

The fear of hydrogen bombs is one of the greatest threats humanity faces.

The police found explosives at that location.

This water has too many bacteria to drink.

We must not forget the horror of the atomic bomb.