She drinks milk every day to maintain her health.

He is working hard on his Japanese studies day by day.

Every day, he exercises at the gym.

A drop of water fell from the cup.

That cute little girl is my granddaughter.

As the saying goes, 'spare the rod and spoil the child', if you pamper them, children will not grow.

In this lake, denitrification is actively taking place.

This bacteria has the ability to denitrify nitrogen in water.

I wake up at eight o'clock every day.