He gathered brushwood to keep warm.

Elephant tusks are very valuable.

The cat named Raku brought happiness to our family.

He shook the die and started the game.

He urged us to hurry, saying 'time and tide wait for no man.'

The steepest descent method is one way to solve optimization problems.

We don't need to reinvent the wheel.

In order to find the least common denominator, you need to find the multiples of all denominators.

Cell division is one of the basic processes of life.

Ceremonial family occasions are traditional family events in Japan.