In linear algebra, the upper triangular matrix plays a very important role.

My room is on the upper level.

The grammar of 'Jou-nidan' is an important part in learning Japanese.

This handover is our new project.

He is doing special exercises to strengthen his flexor digitorum profundus.

Sumatra, an Indonesian large island, has a lot of nature and culture.

Since he is always laughing, it can be said that 'fortune comes in by a merry gate'.

He has a deep interest in parapsychology.

He is an expert in primatology and is engaged in the study of gorilla behavior.

Cytogenetics is a science that studies the structure and function of chromosomes and genes.