Nitrogen makes up about 78% of the Earth's atmosphere.

I boiled water using the '爨'.

There are many rice plants growing in the paddy field.

Mr. Tan is my best friend.

She used an ornamental hairpin to decorate her hair.

The light in the room suddenly went out, and it became pitch dark.

This old television still works.

Electromagnetic waves propagate at the speed of light.

Aden is a beautiful city in Yemen.

Japanese traditional culture is highly valued around the world.