On cold days, cold water is especially delicious.

Can you answer this question?

The environmental issues are becoming more serious.

Environmental issues are becoming more serious day by day.

He is traveling around the world as an ecologist.

It took a long time to set up the development environment.

We must strive to protect the natural environment.

We need to solve the problem in the production environment.

In the old days, people used to draw water directly from the river and drink it.

The water-colored dress suits you very well.