Open the door and let in fresh air.
Meaning: This means to allow new air to enter a room or space by opening the door.
Choice of Words: Open means to move something so that there is a space or hole through which something can pass. Door is a movable barrier at the entrance to a building, room, or vehicle, or in the framework of a cupboard. Let means to allow or permit something to happen or to exist. Fresh means new and not used or experienced before. Air is the mixture of gases that surrounds the Earth. So, Open the door and let in fresh air means to move the door so that there is a space through which new air can enter.
Alternative Expressions
Related Expressions