The airplane violated our country's airspace without permission.

Exchanges between both countries are becoming more active.

Please add an appropriate amount of salt according to the recipe.

He has the ability to solve that problem.

The two poles of the Earth are the North Pole and the South Pole.

He was standing on his two feet.

The United States has adopted a bicameral system.

We threw a party to celebrate the completion of the project.

The project has successfully completed.

This company is like a Liangshan Marsh, where ambitious men gather.