The desert black cobra is a very dangerous snake, its venom is lethal to humans.

A black-necked swan was swimming in the park's pond.

As the name suggests, the black widow spider is a spider with a black body.

I heard the beautiful song of a common blackbird in the park.

In physics, blackbody radiation is a very important concept.

My younger brother is diligently practicing Taekwondo every day.

He emphasized that there is still much to do, saying 'It's a long road ahead as the sun sets.'

I read the Tao Te Ching every day.

The discussion about the regional system in Japan is not over yet.

I attend aikido classes every week.