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

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

He is waiting eagerly for the release of the new game.

He drinks wine every day for his health, truly embodying the proverb 'good wine makes good blood'.

He always tries to make judgments based on the long run.

In this situation, the proverb 'it is best to submit to circumstances' applies.

I borrow new books from the library every week.

I am planning to go to the consulate general tomorrow.

He was researching old records at the public records office.

The prepositional case plays an important role in English grammar.