The theory of black body radiation is an important part of physics.

After the fire, black smoke was hanging in the sky.

He is dark-skinned, suitable for working under the sun.

He used to be a member of the Chinese gang.

As for his future, it's unpredictable.

He said '一瞬先は闇', explaining that predicting the future is difficult.

He likes to take a walk in the park at dusk.

I love eating snacks.

Every morning, he has a habit of reciting the Heart Sutra.

His curiosity always drives him to learn new things.