The idiom "rain check" is used to refer to a temporary postponement or suspension of something, often due to unforeseen circumstances such as bad weather. It can also be used to indicate that someone has agreed to continue doing something at a later time.

The idiom "walking on air" is a figurative expression that means to be extremely happy or pleased about something. It is often used to describe a feeling of being unstoppable and invincible, as if one is floating or walking without any obstacles.

The idiom "time puts everything in its place" means that, eventually, events or situations will unfold as they are supposed to, even if it takes a while. It implies that there is an order and structure to life, and that everything has its own time and place.

The idiom "of course" is used to express that something is obvious or expected. It can be used to indicate agreement, approval, or understanding.

The idiom "melting pot" refers to a place or environment where different cultures, ideas, or individuals come together and mix or blend into a homogenous whole. It can also imply that the differences between different groups are being erased or ignored.