He stared at the embers, lost in memories of the past.

In set theory, the symmetric difference indicates the difference between two sets.

We are in a marriage with an age gap, but our love is deep.

A row vector is one of the basic concepts in linear algebra.

This book was issued last year.

I went to the office to issue a new passport.

He achieved a quick kill in that game.

He performs his own sadhana every day.

I walk every day for my health.

I walk to the park every day.