He is facing the struggle of life.

He is struggling every day for his life.

He undergoes dialysis every week.

The authorities are investigating the incident.

I am waiting for his arrival.

We threw a party with the whole family to celebrate the arrival of the new year.

With the arrival of spring, the cherry blossoms began to bloom.

A new era has arrived.

Bacillus subtilis subsp. natto plays an important role in the fermentation of natto.

The technology of the present age is advancing remarkably.