There are four seasons.

The moon has risen, and the night has deepened.

My father turns forty this year.

I have been to Jordan.

Public opinion has a big impact on politics.

He greeted, 'Hello〴'

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

We must strive to protect the natural environment.

We should recycle to prevent environmental pollution.

We need to solve the problem in the production environment.