The bioluminescent bugs were shining in the dark.

In this experiment, we will use an indicator to observe the reaction between acids and bases.

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 factory suddenly exploded.

This water has too many bacteria to drink.