Trigonometry is a branch of mathematics that studies the relationship between angles and triangles.

In his study of international law, he particularly focuses on jus gentium.

We like to watch satellite broadcasting at home.

Phoenix is one of the constellations in the southern hemisphere.

When he opened the supernatural box, an astonishing power was released.

You can use spectroscopy to examine the components of a substance.

He is a Chinese person.

I use plain flour to make bread.

My friend was born and raised in mainland China.

He is good at speaking Chinese.