Cách sử dụng
"On demand" means that something can be requested or accessed at any time that it is needed. It is often used to describe a service or product that is available whenever it is wanted, instead of being offered only at certain times or on certain days. For example, some TV shows can be watched "on demand" meaning you can watch them whenever you want rather than having to wait for a specific time or day. Another example could be a taxi service that can be requested "on demand" meaning that a person can request a ride at any time they need it.