A more thorough explanation:

Definition: An air-services agreement is a contract that governs the operation of air services, particularly international air services between two countries. It is also known as an air-transport agreement.

Example: The United States and Canada have an air-services agreement that allows airlines from both countries to operate flights between the two countries. This agreement sets out the rules and regulations that airlines must follow, such as safety standards and landing rights.

Explanation: The example illustrates how an air-services agreement works between two countries. The agreement allows airlines to operate flights between the two countries, but they must follow certain rules and regulations to ensure safety and fair competition. This helps to promote air travel between the two countries and benefits both economies.