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

He is the unsung hero of the team.

I hurried down the lower two steps.

An intercontinental ballistic missile is a weapon with a very large destructive power.

The launch of intercontinental ballistic missiles has become an international issue.

The intertransversarius muscle is an important part of our body, especially part of the back muscles.

The Empire of Japan, written as 大日本帝國 in Kyūjitai, was a nation that existed from 1868 to 1945.

He deeply believes in the principles of national socialism.

The Imperial Diet played an important role in Japanese history.

I plan to go to the People's Republic of China next year.