The United Nations Security Council plays a crucial role in maintaining world peace and security.

Triumph won the game and was very happy.

My grandfather contracted poliomyelitis when he was young.

Functional analysis is a branch of mathematics that studies the properties of functions in infinite-dimensional spaces.

Neuroanatomy is an important field of study for understanding the structure and function of the brain.

His words were a clear insult.

He had been holding a grudge against me for a long time.

I am majoring in auditory phonetics at university.

The size of this molecule is a few angstroms.

The length of this molecule is about 1 angstrom.