Cách sử dụng
The expression "rely upon" means to depend on something or someone for support or help. You can use it when you trust something or someone to do what they are supposed to do or to be there for you when you need them. For example, you can rely upon your alarm clock to wake you up on time, or you can rely upon your best friend to be there for you when you're feeling down. It's important to use this expression carefully and only when you really trust something or someone, because if they let you down or don't do what they're supposed to do, it can be very disappointing.