I have been to Zhenjiang.

The Bank of England is the central bank of the UK.

Phoenix is one of the constellations in the southern hemisphere.

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

An arc discharge occurs when electricity passes through the air.

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.

The calculus of variations is a branch of mathematics that deals with the optimization of functions.

He is studying at law school.