"Explain" Natural Recordings by Native Speakers
The word "explain" means to give a clear and detailed description or account of something so that it can be understood. It can also mean to make something that is confusing or obscure understandable by providing a clear and logical explanation.
The word "expiry" refers to the time or date after which something, such as a contract, a payment, or a product, is no longer valid or can no longer be used.