He is systematically advancing his work.

We will hold a meeting to make a new business plan.

We made plans for the picnic next week.

Tomorrow's flight has been cancelled as planned.

Tomorrow's flight has been cancelled as planned.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

Linear programming is a part of operations research and is used to find the optimal solution.

Paying the urban planning tax is a citizen's duty.

The United Nations Environment Programme is providing solutions to global environmental problems.