The reindeer's antlers have a beautiful shape.

He was surprised when he saw the list of nuclear powers.

He reported on the results of the subcritical nuclear experiment.

Scientists are developing a new type of fusion reactor.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

In which direction is your house?

The result is certainly the result of his efforts.

My mother woke me up.

In linear algebra, triangular matrices play a very important role.

A diagonal matrix is a matrix in which all elements outside the main diagonal are zero.