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

A lower triangular matrix is a matrix where all the elements below the main diagonal are zero.

As soon as he arrived, he said 'I just got here.'

He is still young and lacks experience.

He found a 玦 and knew it was a broken piece of jade.

He is considering immigration from America to Japan.

I think this fossil is from a trilobite.

Mare's milk is said to be nutritious and good for health.

This cheese is made from ewe's milk.

My restaurant offers Japanese, Western, and Chinese cuisine.