Today is the Taian day, so it's the perfect day to start a new project.

The White House is the official residence of the President of the United States.

We go to church on the Sabbath.

Please store this medicine in a cool, dark place.

Please wait until your turn.

I was waiting for him in the waiting room.

Dark matter is covering this world.

Observing dark nebulae is difficult.

In this chemical experiment, we will examine the properties of benzoic acid.

He decided to challenge the exploration of the Dark Continent.